Ratings - please read before commenting - Archived

[JCS]

i like ANDRE BERTO NUMBER 2 IN THE WORLD

#8, not 2

[conan_the_cribber]

WTF ? Spinks is 17 places below Kamarzan despite beating him in his last outing.

If you think this is defensable, then you guys are weirder than I thought.

conan

[conan_the_cribber]

... Traditional Rankings now with - a bit changed:

- winner higher than loser -> no change for winner, loser set back by 3 ranks for KO, TKO, DQ, else by 2 ranks
- winner lower than loser -> winner gets rank of loser or just below
-- exact winner's position is harmonic mean of loser's rank and harmonic mean of winner's rank and loser's rank
-- r_w_new = harm(r_l, harm(r_l, r_w) )
- rank loser is 3 ranks below winner for TKO, KO, DQ, else by 2 ranks
-- example: r_l=1, r_w=10 -> r_w_new = 1, r_new_l = 3
-- example: r_l=5, r_w=20 -> r_w_new = 7, r_l_new = 9

- draw: higher ranked is treated a loser, but gets rank as a winner; loser is 1 rank below
-- example: r_d_high=1, r_d_low=10 -> r_d_high_new=1, r_d_low_new=2
-- example: r_d_high=5, r_d_low=20 -> r_d_high_new= 7, r_d_low_new=8

- inactivity:
-- a boxer is not ranked, if he didn't fight within 1 year
-- he holds his ranking in the background
-- but a boxer is dropped in the background for very period of inactivity of more than 1.5 years - this maybe multiple
-- in the background his rank is multiplied with 3
-- in case of comeback his background rank is launched

- missing quality of oppononents:
- a boxer is dropped for missing quality of opponents;
- his rank is dropped by factor 2, if he didn't fight an opponent within factor 3 of his rank within 1.5 years
- maximum requirement for top15 boxers is to fight an opponent within rank 45

- weight division change:
-- not yet regarded - as would require too much computer resources for parallel calculation of rankings - maybe analysed later

So that's it - and these are the results - last bout regarded from July 23, 2006 - division hint to division assigned in BoxRec - last number are days since last bout in division:

- prediction rate over all established boxers: 63.5%



Heavyweight:

Heavyweight 1 Nikolay Valuev 61
Heavyweight 2 John Ruiz 229
Heavyweight 3 Wladimir Klitschko 103
Heavyweight 4 Hasim Rahman 138
Heavyweight 5 Chris Byrd 103
Heavyweight 6 James Toney 138
Heavyweight 7 DaVarryl Williamson 89
Heavyweight 8 Oliver McCall 34
Heavyweight 9 Serguei Lyakhovich 124
Heavyweight 10 Lamon Brewster 124
Heavyweight 11 Ray Austin 124
Heavyweight 12 Monte Barrett 355
Heavyweight 13 Larry Donald 306
Heavyweight 14 Calvin Brock 40
Heavyweight 15 Oleg Maskaev 264
Heavyweight 16 Luan Krasniqi 96
Heavyweight 17 Henry Akinwande 152
Heavyweight 18 Jameel McCline 13
Heavyweight 19 Zuri Lawrence 159
Heavyweight 20 Sultan Ibragimov 231
Heavyweight 21 Matt Skelton 26
Heavyweight 22 Lance Whitaker 231
Heavyweight 23 Danny Williams 26
Heavyweight 24 Sinan Samil Sam 117
Heavyweight 25 Timo Hoffmann 103
Heavyweight 26 Vladimir Virchis 19
Heavyweight 27 Tony Thompson 36
Heavyweight 28 Paolo Vidoz 19
Heavyweight 29 Fres Oquendo 70
Heavyweight 30 Dominick Guinn 36

Hi Computerrank,

thanks for continuing this test. I think the traditional rankings do indeed start to look like traditional rankings. There are surprises in almost every division, but not as many surprises as the "predictive" rankings bring along. I think all the fighters in the top 10 of the heavies have at least proved something to me in the past, Calvin Brock has yet to do this.

A couple of things that I'd like to know still. From above.


Q1)
-- example: r_l=5, r_w=20 -> r_w_new = 7, r_l_new = 9

I thought the harmonic mean here would be r_w_new = 8 not 7. 2*5*20 divided by 5+20 = 8. Also do you round down or up. If the harmonic mean comes in at 7.4 do you rank the fighter at 7 or 8. How about 7.6, does that get rank 7 or rank 8.

Q2)

What are the factors that you are talking about in the "missing quality of opposition". Does it mean that a number one ranked fighter has to fight a top 3 fighter (factor 3) within 1.5 years to avoid being penalized. That seems a bit harsch given the difficulties in organising unification bouts.

Q3) I'm surprised by Oliver McCalls advancement since your first attempt. I realise that he beat Lewis and Akinwande, but has he really been active enough. I guess the NC against Gomez helps him.

Q4) I'm surprised at John Ruiz at 2. I assume at the time Valuev fought him, Valuev was somewhere around 10 given his victory over Donald and Donalds victory over Holyfield. If that was good enough to propel Valuev to number 1, then Ruiz must drop to at least 3. Youeven described it above.

- rank loser is 3 ranks below winner for TKO, KO, DQ, else by 2 ranks
-- example: r_l=1, r_w=10 -> r_w_new = 1, r_new_l = 3


Thanks for any answers.

conan

[computerrank]

WTF ? Spinks is 17 places below Kamarzan despite beating him in his last outing.

If you think this is defensable, then you guys are weirder than I thought.

conan

... this was nearly a draw looking at the pure scorecards ... and as a winner is not set above the loser in any case ... Spinks only got relatively few points is still behind ...

[computerrank]

@conan

ad Q1:
- sorry, you are right, I used the geometric mean
- yes, I round down in every case

ad Q2:
- as I described: maximum requirement for top15 boxers is to fight an opponent within rank 45
- for ranks 1 to 15 an opponent inside rank 45 is sufficient - exactly for the raison you mentioned
- inside factor 3 is necessary outside top 15

ad Q3:
- NC is not regarded in any case, even not to be busy
- I don't have the individual traces, but perhaps can check it for McCall

ad Q4:
- might be an effect of Byrd dropping down later
- I don't have the individual traces, but perhaps can check it for Ruiz

[conan_the_cribber]

@conan

ad Q1:
- sorry, you are right, I used the geometric mean
- yes, I round down in every case

ad Q2:
- as I described: maximum requirement for top15 boxers is to fight an opponent within rank 45
- for ranks 1 to 15 an opponent inside rank 45 is sufficient - exactly for the raison you mentioned
- inside factor 3 is necessary outside top 15

ad Q3:
- NC is not regarded in any case, even not to be busy
- I don't have the individual traces, but perhaps can check it for McCall

ad Q4:
- might be an effect of Byrd dropping down later
- I don't have the individual traces, but perhaps can check it for Ruiz

thanks for the answers. The more I look at the the top 30 list for the heavies, the more I like it. I think 15 thru 30 is very good. Ruiz at 2 more to do with everyones opinion of him, rather than his achievements. There was definitely a case for him being number 1 at the point of his loss to Valuev. Your explanation of his ranking because of Byrds loss is plausable, as long as Wlad was way down at the time of the bout. His win may have only propelled Wlad to #3, leaving Ruiz at #2 by default.

I still maintain that a multiplication penalty for successive losses would improve the rankings and the predictability. I think a bunch of fighters get piggy backed into the ratings by wins over people who are on their way out e.g. victims Monty Barrett, Guinn, Whitakter, McCline.

Why do you need extra resources for the weight division change. Just do something simple, like multiplying the ranking by three, and slotting the fighter in.

conan

[JCS]

@conan

ad Q1:
- sorry, you are right, I used the geometric mean
- yes, I round down in every case

ad Q2:
- as I described: maximum requirement for top15 boxers is to fight an opponent within rank 45
- for ranks 1 to 15 an opponent inside rank 45 is sufficient - exactly for the raison you mentioned
- inside factor 3 is necessary outside top 15

ad Q3:
- NC is not regarded in any case, even not to be busy
- I don't have the individual traces, but perhaps can check it for McCall

ad Q4:
- might be an effect of Byrd dropping down later
- I don't have the individual traces, but perhaps can check it for Ruiz

thanks for the answers. The more I look at the the top 30 list for the heavies, the more I like it. I think 15 thru 30 is very good. Ruiz at 2 more to do with everyones opinion of him, rather than his achievements. There was definitely a case for him being number 1 at the point of his loss to Valuev. Your explanation of his ranking because of Byrds loss is plausable, as long as Wlad was way down at the time of the bout. His win may have only propelled Wlad to #3, leaving Ruiz at #2 by default.

I still maintain that a multiplication penalty for successive losses would improve the rankings and the predictability. I think a bunch of fighters get piggy backed into the ratings by wins over people who are on their way out e.g. victims Monty Barrett, Guinn, Whitakter, McCline.

Why do you need extra resources for the weight division change. Just do something simple, like multiplying the ranking by three, and slotting the fighter in.

conan

I'm not sure multiplying by 3 is the answer. #1 would be #3, while #20 would end up being #60!

Maybe multiply by 1.5 then add 2 per each class jump (round to the higher number) or * 1.25 and add 3.

[conan_the_cribber]

@conan

ad Q1:
- sorry, you are right, I used the geometric mean
- yes, I round down in every case

ad Q2:
- as I described: maximum requirement for top15 boxers is to fight an opponent within rank 45
- for ranks 1 to 15 an opponent inside rank 45 is sufficient - exactly for the raison you mentioned
- inside factor 3 is necessary outside top 15

ad Q3:
- NC is not regarded in any case, even not to be busy
- I don't have the individual traces, but perhaps can check it for McCall

ad Q4:
- might be an effect of Byrd dropping down later
- I don't have the individual traces, but perhaps can check it for Ruiz

thanks for the answers. The more I look at the the top 30 list for the heavies, the more I like it. I think 15 thru 30 is very good. Ruiz at 2 more to do with everyones opinion of him, rather than his achievements. There was definitely a case for him being number 1 at the point of his loss to Valuev. Your explanation of his ranking because of Byrds loss is plausable, as long as Wlad was way down at the time of the bout. His win may have only propelled Wlad to #3, leaving Ruiz at #2 by default.

I still maintain that a multiplication penalty for successive losses would improve the rankings and the predictability. I think a bunch of fighters get piggy backed into the ratings by wins over people who are on their way out e.g. victims Monty Barrett, Guinn, Whitakter, McCline.

Why do you need extra resources for the weight division change. Just do something simple, like multiplying the ranking by three, and slotting the fighter in.

conan

I'm not sure multiplying by 3 is the answer. #1 would be #3, while #20 would end up being #60!

Maybe multiply by 1.5 then add 2 per each class jump (round to the higher number) or * 1.25 and add 3.

Hi Martin,

Multiplying by 3 was just a quick solution to an immediate problem e.g. Mayweather starting at #600 at welter. Both your solutions produce good results. I think you need an extra rule for the transition to heavyweight though. I would never put any #1 cruiser automatically in the top 10 heavies let alone the top 5. According to both algorithms above, the best cruiser would finish in the heavyweight top 4.

conan

[computerrank]

... I am working on the problem of sufficient ressources to calculate the rankings of all weight divisions in one run ...

... I have to track all boxers in all divisions and all their bouts the last 18 months ... this needs ressources

... But I set up a new algorithm, which could match ...

@jason

- the factor of 3 for quality opponents is based on some analysis
- I first tried a lower factor, but found, that a high part of all boxers would continiously miss the requirements - so the criteria wouldn't be in state effectivly
- we have to accept that the effective requirements are a bit lower at this times - I really should like to see it the other way, but this is the current behaviour of the sport
- the IBO also found this, I think, they request a top 50 opponent for the top 10

@conan

- for division change I just test with factor 3 per division step up
- plus 5 ranks for step up into heavyweight

[computerrank]

Now the Traditional Rankings including division change - last bout from June 23, 2006:

From heavyweights down to minimumweights

Heavyweight 1 Nikolay Valuev 67
Heavyweight 2 John Ruiz 235
Heavyweight 3 Wladimir Klitschko 109
Heavyweight 4 DaVarryl Williamson 95
Heavyweight 5 Chris Byrd 109
Heavyweight 6 Hasim Rahman 144
Heavyweight 7 James Toney 144
Heavyweight 8 Oliver McCall 40
Heavyweight 9 Calvin Brock 46
Heavyweight 10 Ray Austin 130
Heavyweight 11 Larry Donald 312
Heavyweight 12 Serguei Lyakhovich 130
Heavyweight 13 Lamon Brewster 130
Heavyweight 14 Monte Barrett 361
Heavyweight 15 Jameel McCline 19
Heavyweight 16 Matt Skelton 32
Heavyweight 17 Henry Akinwande 158
Heavyweight 18 Oleg Maskaev 270
Heavyweight 19 Danny Williams 32
Heavyweight 20 Zuri Lawrence 165
Heavyweight 21 Luan Krasniqi 102
Heavyweight 22 Fres Oquendo 76
Heavyweight 23 Timo Hoffmann 109
Heavyweight 24 Sultan Ibragimov 237
Heavyweight 25 Javier Mora 76
Cruiserweight 26 Jean Marc Mormeck 32
Heavyweight 27 Sinan Samil Sam 123
Heavyweight 28 Samuel Peter 103
Heavyweight 29 Vladimir Virchis 25
Heavyweight 30 Lance Whitaker 237

Cruiserweight 1 Johnny Nelson 256
Cruiserweight 2 O'Neil Bell 214
Cruiserweight 3 Guillermo Jones 340
Cruiserweight 4 Steve Cunningham 214
Cruiserweight 5 Jean Marc Mormeck 214
Heavyweight 6 Kelvin Davis 340
Cruiserweight 7 Wayne Braithwaite 340
Cruiserweight 8 Vincenzo Cantatore 81
Cruiserweight 9 Luis Andres Pineda 242
Cruiserweight 10 David Haye 19
Cruiserweight 11 Enzo Maccarinelli 32
Cruiserweight 12 Alexander Gurov 236
Light Heavyweight 13 Rudy Markussen 193
Cruiserweight 14 Krzysztof Wlodarczyk 39
Cruiserweight 15 Dale Brown 237
Light Heavyweight 16 Mehdi Sahnoune 513
Cruiserweight 17 Vincenzo Rossitto 25
Cruiserweight 18 Tito Mendoza 60
Cruiserweight 19 Virgil Hill 194
Cruiserweight 20 Valery Brudov 25
Cruiserweight 21 Marco Huck 67
Cruiserweight 22 Vadim Tokarev 83
Cruiserweight 23 Mark Hobson 69
Cruiserweight 24 Mohamed Azzaoui 74
Super Middleweight 25 Sean Sullivan 74
Cruiserweight 26 Grigory Drozd 214
Cruiserweight 27 Aloryi Moyoyo Mensah 89
Light Heavyweight 28 Yuri Barashian 424
Cruiserweight 29 Mauro Adrian Ordiales 130
Cruiserweight 30 Frederic Serrat 256

Light Heavyweight 1 Zsolt Erdei 95
Cruiserweight 2 Fabrice Tiozzo 529
Light Heavyweight 3 Glen Johnson 166
Light Heavyweight 4 Clinton Woods 88
Light Heavyweight 5 Julio Gonzalez 20
Cruiserweight 6 Rico Hoye 523
Light Heavyweight 7 Antonio Tarver 60
Light Heavyweight 8 Roy Jones Jr 312
Super Middleweight 9 Mariano Natalio Carrera 200
Light Heavyweight 10 Mehdi Sahnoune 291
Light Heavyweight 11 Tomasz Adamek 298
Light Heavyweight 12 Stipe Drews 74
Light Heavyweight 13 Paul Briggs 298
Middleweight 14 Shannan Taylor 404
Super Middleweight 15 Sergio Ernesto Acuna 404
Light Heavyweight 16 Hugo Hernan Garay 123
Light Heavyweight 17 Montell Griffin 131
Super Middleweight 18 Otis Grant 284
Light Heavyweight 19 Thomas Ulrich 123
Light Heavyweight 20 Gabriel Campillo 249
Light Heavyweight 21 George Khalid Jones 313
Cruiserweight 22 Derrick Harmon 440
Light Heavyweight 23 Prince Badi Ajamu 194
Cruiserweight 24 Jose Luis Herrera 109
Cruiserweight 25 Daniel Judah 292
Light Heavyweight 26 Kai Kurzawa 74
Cruiserweight 27 Jorge Fernando Castro 109
Super Middleweight 28 Alejandro Berrio 474
Light Heavyweight 29 Jason DeLisle 88
Cruiserweight 30 Gustavo Javier Kapusi 200

Super Middleweight 1 Joe Calzaghe 158
Super Middleweight 2 Markus Beyer 193
Light Middleweight 3 Fernando Vargas 501
Super Middleweight 4 Robin Reid 368
Light Heavyweight 5 Danilo Haussler 88
Super Middleweight 6 Jeff Lacy 158
Super Middleweight 7 Cristian Sanavia 82
Super Middleweight 8 Mikkel Kessler 207
Middleweight 9 Raymond Joval 501
Super Middleweight 10 Vitali Tsypko 264
Super Middleweight 11 Anthony Mundine 84
Super Middleweight 12 Carl Froch 75
Super Middleweight 13 Omar Sheika 340
Super Middleweight 14 Brian Magee 75
Super Middleweight 15 Danny Green 84
Light Heavyweight 16 Rudy Markussen 207
Middleweight 17 Marcelo Alejandro Rodriguez 96
Super Middleweight 18 Mger Mkrtchian 117
Super Middleweight 19 Sergio Ernesto Acuna 180
Super Middleweight 20 Mario Veit 74
Super Middleweight 21 Jackson Chanet 25
Super Middleweight 22 Peter Manfredo Jr 177
Super Middleweight 23 Lucian Bute 85
Super Middleweight 24 Scott Pemberton 177
Light Heavyweight 25 Kabary Salem 327
Super Middleweight 26 Paulo Alejandro Sanchez 279
Super Middleweight 27 Daniel Santos 32
Light Heavyweight 28 Norman Jones 341
Super Middleweight 29 Robert Stieglitz 249
Light Middleweight 30 Joachim Alcine 487

Middleweight 1 Jermain Taylor 53
Middleweight 2 Ronald Wright 53
Light Middleweight 3 Vernon Forrest 389
Middleweight 4 Sam Soliman 159
Super Middleweight 5 Mariano Natalio Carrera 347
Super Middleweight 6 Paulo Alejandro Sanchez 347
Middleweight 7 Mpush Makambi 61
Middleweight 8 Arthur Abraham 88
Light Middleweight 9 Javier Alberto Mamani 480
Middleweight 10 Amin Asikainen 67
Middleweight 11 Raymond Joval 255
Super Middleweight 12 Walter Javier Crucce 522
Middleweight 13 Sebastian Sylvester 67
Super Middleweight 14 Sakio Bika 260
Middleweight 15 Javier Castillejo 25
Middleweight 16 Evans Ashira 466
Middleweight 17 Yoshihiro Araki 260
Middleweight 18 Felix Sturm 25
Super Middleweight 19 Morrade Hakkar 389
Light Heavyweight 20 Ruben Eduardo Acosta 446
Light Middleweight 21 Sebastian Andres Lujan 167
Middleweight 22 Edison Miranda 138
Super Middleweight 23 Francisco Antonio Mora 362
Light Middleweight 24 Alfonso Gomez 442
Middleweight 25 Howard Eastman 138
Super Middleweight 26 Jesse Brinkley 442
Light Heavyweight 27 Chad Dawson 495
Middleweight 28 Wayne Elcock 95
Middleweight 29 Jamie Moore 19
Middleweight 30 Efrain Garcia 495

Light Middleweight 1 Shane Mosley 25
Light Middleweight 2 Sergiy Dzinziruk 74
Light Middleweight 3 Sergio Gabriel Martinez 130
Middleweight 4 Javier Castillejo 354
Light Middleweight 5 Kassim Ouma 95
Light Middleweight 6 Attila Kovacs 67
Light Middleweight 7 Fernando Vargas 25
Light Middleweight 8 Rodney Jones 166
Super Middleweight 9 Daniel Santos 249
Light Middleweight 10 Raul Frank 166
Light Middleweight 11 Vincent Vuma 54
Light Middleweight 12 Joachim Alcine 47
Middleweight 13 Jamie Moore 194
Light Middleweight 14 Ian MacKillop 19
Middleweight 15 Sebastien Demers 27
Light Middleweight 16 Sebastian Andres Lujan 74
Light Middleweight 17 Javier Alberto Mamani 47
Light Middleweight 18 Verno Phillips 126
Light Middleweight 19 William Gare 173
Light Middleweight 20 Badru Lusambya 74
Light Middleweight 21 Joshua Clottey 249
Light Middleweight 22 Oscar De La Hoya 95
Light Middleweight 23 Cory Spinks 32
Light Middleweight 24 Steve Conway 67
Light Middleweight 25 Roman Karmazin 32
Light Middleweight 26 Ricardo Mayorga 95
Light Middleweight 27 Juan Mauricio Marino 347
Light Middleweight 28 Wayne Alexander 158
Light Middleweight 29 Thomas McDonagh 158
Light Middleweight 30 Alisultan Nadirbegov 70

Welterweight 1 Antonio Margarito 172
Welterweight 2 Joseph Makaringe 166
Welterweight 3 Carlos Manuel Baldomir 18
Light Welterweight 4 Isaac Hlatshwayo 53
Welterweight 5 Floyd Mayweather Jr 123
Welterweight 6 Kermit Cintron 112
Welterweight 7 Zab Judah 123
Welterweight 8 Marcos Rene Maidana 81
Light Middleweight 9 Cory Spinks 550
Welterweight 10 Dondon Sultan 81
Light Middleweight 11 Kazuhiko Hidaka 249
Welterweight 12 Anton Solopov 81
Welterweight 13 Oktay Urkal 67
Welterweight 14 Michel Trabant 186
Light Welterweight 15 Souleymane M'baye 242
Welterweight 16 Michèle Orlando 186
Welterweight 17 Maxim Nesterenko 61
Middleweight 18 Elio Ortiz 522
Welterweight 19 Arturo Gatti 18
Welterweight 20 Sven Paris 318
Welterweight 21 Thomas Damgaard 193
Welterweight 22 Luis Gustavo Sosa 81
Light Welterweight 23 Jorge Luis Noriega Medrano 263
Welterweight 24 Cosme Rivera 68
Welterweight 25 Nelson Linares 89
Welterweight 26 Aladino Alanis 89
Light Middleweight 27 Gilberto Reyes 138
Welterweight 28 Vyacheslav Senchenko 19
Light Welterweight 29 Herman Ngoudjo 487
Welterweight 30 Hiroshi Yamaguchi 111

Welterweight 1 Ricky Hatton 256
Welterweight 2 Floyd Mayweather Jr 410
Light Welterweight 3 Cesar Rene Cuenca 89
Light Welterweight 4 Miguel Angel Cotto 60
Light Welterweight 5 Carlos Maussa 256
Welterweight 6 Vivian Harris 410
Light Welterweight 7 DeMarcus Corley 326
Welterweight 8 Henry Bruseles 102
Light Welterweight 9 Junior Witter 292
Welterweight 10 Carlos Wilfredo Vilches 130
Super Featherweight 11 Vicente Mosquera 186
Light Welterweight 12 Arturo Morua 40
Light Welterweight 13 Lovemore N'dou 47
Light Welterweight 14 Juan Urango 40
Light Welterweight 15 Lenny Daws 89
Light Welterweight 16 Yodsanan Sor Nanthachai 82
Light Welterweight 17 Souleymane M'baye 32
Light Welterweight 18 Naoufel Ben Rabah 40
Light Welterweight 19 Colin Lynes 201
Light Welterweight 20 Juan Carlos Rodriguez 242
Lightweight 21 Juan Carlos Ramirez 236
Light Welterweight 22 Herman Ngoudjo 77
Welterweight 23 Wilfredo Negron 292
Light Welterweight 24 Randall Bailey 95
Lightweight 25 Jairo Rafael Ramirez 124
Light Welterweight 26 John Brown 77
Light Welterweight 27 Andreas Kotelnik 102
Lightweight 28 Ismael Gonzalez 299
Welterweight 29 Juan Lazcano 271
Light Welterweight 30 Jung Bum Kim 151

Lightweight 1 Diego Corrales 459
Light Welterweight 2 Isaac Hlatshwayo 124
Lightweight 3 Acelino Freitas 102
Lightweight 4 Zahir Raheem 102
Light Welterweight 5 Jose Luis Castillo 459
Lightweight 6 Sergio Eduardo Gonzalez 109
Lightweight 7 Joan Guzman 95
Super Featherweight 8 Manuel Medina 334
Lightweight 9 Aldo Nazareno Rios 165
Lightweight 10 Fernando David Saucedo 74
Light Welterweight 11 Fernando Angulo 298
Super Featherweight 12 Erik Morales 333
Featherweight 13 Valdemir Pereira 382
Lightweight 14 Juan Carlos Diaz Melero 187
Lightweight 15 Juan Diaz 25
Minimumweight 16 Nkosinathi Joyi 410
Lightweight 17 Matt Zegan 151
Lightweight 18 Joel Casamayor 33
Welterweight 19 Stevie Johnston 298
Lightweight 20 Diego Martin Alzugaray 74
Lightweight 21 Julio Diaz 83
Featherweight 22 Carlos Contreras 530
Light Welterweight 23 Yodsanan Sor Nanthachai 247
Lightweight 24 Ricky Quiles 83
Super Featherweight 25 Javier Jauregui 95
Lightweight 26 Eduardo Daniel Roman 60
Lightweight 27 Juan Humberto Garza 159
Light Welterweight 28 Jorge Luis Noriega Medrano 438
Lightweight 29 Jesus Chavez 326
Lightweight 30 Michael Katsidis 355

Super Featherweight 1 Manny Pacquiao 38
Super Featherweight 2 Jorge Rodrigo Barrios 81
Super Featherweight 3 Marco Antonio Barrera 81
Super Featherweight 4 Erik Morales 200
Super Featherweight 5 Alex Arthur 172
Super Featherweight 6 Rocky Juarez 81
Super Featherweight 7 Robbie Peden 326
Super Featherweight 8 Vicente Mosquera 89
Featherweight 9 Terdsak Jandaeng 225
Lightweight 10 Nate Campbell 532
Super Featherweight 11 Bobby Pacquiao 60
Super Featherweight 12 Mzonke Fana 243
Super Featherweight 13 Janos Nagy 81
Super Featherweight 14 Jose Pablo Estrella 89
Super Featherweight 15 Oscar Larios 38
Super Featherweight 16 Craig Docherty 488
Lightweight 17 Mike Anchondo 488
Featherweight 18 Carlos Contreras 284
Lightweight 19 Juan Carlos Ramirez 523
Light Welterweight 20 Yodsanan Sor Nanthachai 466
Super Featherweight 21 Ryu Miyagi 59
Super Featherweight 22 Ali Funeka 18
Lightweight 23 Jesus Chavez 438
Lightweight 24 Jose Miguel Aguiniga 362
Super Featherweight 25 Cassius Baloyi 70
Super Featherweight 26 Javier Osvaldo Alvarez 138
Super Featherweight 27 Manuel Medina 70
Lightweight 28 Sergio Palomo 243
Super Bantamweight 29 Themba Tshicila 235
Lightweight 30 Hector Velazquez 333

Featherweight 1 Chris John 158
Featherweight 2 Scott Harrison 277
Featherweight 3 Juan Manuel Marquez 158
Super Bantamweight 4 Julio Zarate 313
Featherweight 5 Toshiaki Nishioka 186
Featherweight 6 Shoji Kimura 123
Featherweight 7 In Jin Chi 192
Bantamweight 8 Jhonny Gonzalez 495
Featherweight 9 Bernard Dunne 128
Super Featherweight 10 Hector Javier Marquez 530
Super Bantamweight 11 Daniel Ponce De Leon 467
Bantamweight 12 Edinso Torres 326
Featherweight 13 Robert Guerrero 47
Super Bantamweight 14 Napapol Kiatisakchokchai 47
Featherweight 15 Sandro Marcos 327
Featherweight 16 Gamaliel Diaz 47
Lightweight 17 Jose Miguel Aguiniga 103
Featherweight 18 Alejandro Barrera 238
Super Featherweight 19 Yoddamrong Sithyodthong 123
Featherweight 20 Nicky Cook 166
Featherweight 21 Adam Carrera 26
Featherweight 22 Johnny Tapia 327
Super Bantamweight 23 Sod Looknongyangtoy 369
Featherweight 24 Hiroyuki Enoki 200
Super Featherweight 25 Zaiki Takemoto 279
Featherweight 26 Humberto Soto 173
Featherweight 27 Oscar Leon 173
Super Bantamweight 28 Martin Mnyandu 159
Featherweight 29 Trinidad Mendoza 495
Super Bantamweight 30 Ivan Hernandez 379

Super Bantamweight 1 Israel Vazquez 60
Super Featherweight 2 Oscar Larios 249
Bantamweight 3 Samuel Lopez 320
Super Bantamweight 4 Somsak Sithchatchawal 144
Super Bantamweight 5 Gabula Vabaza 131
Super Bantamweight 6 Katsushige Kawashima 128
Super Bantamweight 7 Daniel Ponce De Leon 25
Bantamweight 8 Heriberto Ruiz 320
Super Bantamweight 9 Celestino Caballero 186
Featherweight 10 Yober Ortega 298
Super Bantamweight 11 Hector Julio Avila 93
Super Bantamweight 12 Sod Looknongyangtoy 25
Featherweight 13 Noel Wilders 458
Super Bantamweight 14 Zolani Marali 291
Lightweight 15 Joan Guzman 474
Super Bantamweight 16 Ricardo Castillo 95
Super Bantamweight 17 Wethya Sakmuangklang 118
Bantamweight 18 Cesar Morales 284
Bantamweight 19 Ramon Gamez 484
Featherweight 20 Alexander Hrulev 299
Super Bantamweight 21 Napapol Kiatisakchokchai 137
Super Bantamweight 22 Michael Hunter 47
Super Bantamweight 23 Salem Bouaita 474
Super Bantamweight 24 Esham Pickering 250
Super Bantamweight 25 Takalani Ndlovu 76
Super Bantamweight 26 Armando Guerrero 278
Featherweight 27 Daniel Kodjo Sassou 35
Super Bantamweight 28 Tuncay Kaya 47
Super Bantamweight 29 Fabio Daniel Oliva 110
Super Bantamweight 30 Fahsan 3K Battery 19

Bantamweight 1 Rafael Marquez 277
Bantamweight 2 Wladimir Sidorenko 25
Bantamweight 3 Ricardo Cordoba 151
Super Bantamweight 4 Julio Zarate 529
Bantamweight 5 Irene Pacheco 102
Super Flyweight 6 Rosendo Alvarez 186
Bantamweight 7 Silence Mabuza 111
Bantamweight 8 Hozumi Hasegawa 137
Bantamweight 9 Mauricio Martinez 81
Bantamweight 10 Heriberto Ruiz 102
Bantamweight 11 Jhonny Gonzalez 74
Super Bantamweight 12 Ratanachai Sor Vorapin 284
Super Flyweight 13 Federico Catubay 326
Super Flyweight 14 Oscar Andrade 375
Bantamweight 15 Poonsawat Kratingdaenggym 25
Bantamweight 16 Fernando Montiel 74
Bantamweight 17 Simone Maludrottu 110
Super Bantamweight 18 Paulino Villalobos 375
Bantamweight 19 Damaen Kelly 110
Bantamweight 20 Sasha Bakhtin 170
Super Bantamweight 21 Jose Nieves 243
Bantamweight 22 Masaki Kawabata 283
Bantamweight 23 Simpiwe Vetyeka 33
Bantamweight 24 Leo Gamez 230
Bantamweight 25 Veeraphol Sahaprom 137
Bantamweight 26 Alejandro Valdez 81
Super Bantamweight 27 Joel Bauya 442
Super Bantamweight 28 Ryuichi Minoriyama 534
Bantamweight 29 Siyabonga Nyanga 33
Super Bantamweight 30 Cecilio Santos 81

Super Flyweight 1 Masamori Tokuyama 163
Super Flyweight 2 Nobuo Nashiro 18
Super Bantamweight 3 Katsushige Kawashima 387
Flyweight 4 Pongsaklek Wonjongkam 376
Super Flyweight 5 Martin Castillo 18
Super Flyweight 6 Simon Ramoni 103
Super Flyweight 7 Khulile Makeba 73
Super Flyweight 8 Alexander Munoz 200
Super Flyweight 9 Theo Modise 368
Light Flyweight 10 Junichi Ebisuoka 332
Super Flyweight 11 Luis Alberto Perez 95
Super Flyweight 12 Masibulele Makepula 131
Bantamweight 13 Fernando Montiel 284
Super Flyweight 14 Pramuansak Posuwan 106
Super Flyweight 15 Z Gorres 144
Super Flyweight 16 Trash Nakanuma 53
Super Bantamweight 17 Ivan Hernandez 487
Super Flyweight 18 Simpiwe Nongqayi 347
Flyweight 19 Glenn Donaire 411
Bantamweight 20 Prosper Matsuura 260
Bantamweight 21 Rolly Matsushita 530
Super Bantamweight 22 Alex Becerra 327
Super Flyweight 23 Dimitri Kirilov 95
Bantamweight 24 Jose Navarro 163
Bantamweight 25 Masayuki Arinaga 247
Minimumweight 26 Juan Alfonso Keb Baas 340
Bantamweight 27 Medgoen Singsurat 376
Light Flyweight 28 Deeden Kengkarun 306
Featherweight 29 Luis Bolano 466
Flyweight 30 Zolile Mbityi 284

Flyweight 1 Lorenzo Parra 247
Flyweight 2 Vic Darchinyan 67
Flyweight 3 Pongsaklek Wonjongkam 40
Flyweight 4 Brahim Asloum 25
Light Flyweight 5 Koki Kameda 96
Flyweight 6 Denkaosan Kaovichit 99
Flyweight 7 Jose Lopez 130
Flyweight 8 Jose Lopez Bueno 278
Flyweight 9 Ken Nakajima 80
Light Flyweight 10 Juan Jose Landaeta 235
Flyweight 11 Monelisi Mhikiza Myekeni 131
Super Flyweight 12 Hiroyuki Hisataka 249
Flyweight 13 Omar Andres Narvaez 247
Super Flyweight 14 Takefumi Sakata 142
Flyweight 15 Akhona Aliva 152
Super Flyweight 16 Jojo Bardon 144
Light Flyweight 17 Wandee Singwangcha 152
Flyweight 18 Randy Mangubat 538
Light Flyweight 19 Noel Arambulet 256
Super Flyweight 20 Jair Jimenez 350
Light Flyweight 21 Vicky Tahumil 337
Flyweight 22 Juan Alberto Rosas 256
Flyweight 23 Ivan Pozo 243
Flyweight 24 Daisuke Naito 43
Light Flyweight 25 Sizwe Sinyabi 460
Light Flyweight 26 Kompayak Porpramook 300
Flyweight 27 Noriyuki Komatsu 43
Flyweight 28 Everardo Morales 40
Flyweight 29 Jorge Armando Arce 123
Bantamweight 30 Angel Antonio Priolo 375

Light Flyweight 1 Muvhuso Nedzanani 75
Light Flyweight 2 Hugo Fidel Cazares 40
Light Flyweight 3 Roberto Vasquez 81
Light Flyweight 4 Brian Viloria 172
Light Flyweight 5 Jose Antonio Aguirre 172
Flyweight 6 Charitt Mukondelela 54
Light Flyweight 7 Wandee Singwangcha 22
Light Flyweight 8 Vuyani Kheswa 54
Light Flyweight 9 Ulises Solis 137
Light Flyweight 10 Samora Msopi 39
Flyweight 11 Ayanda Ramncwana 39
Light Flyweight 12 Eric Ortiz 137
Light Flyweight 13 Juan Jose Landaeta 487
Flyweight 14 Nelson Dieppa 75
Light Flyweight 15 Mfundo Gwayana 271
Light Flyweight 16 Munetsugu Kayo 58
Light Flyweight 17 Will Grigsby 214
Light Flyweight 18 Takahisa Masuda 240
Flyweight 19 Carlos Fajardo 418
Minimumweight 20 Toshiki Ogawa 420
Minimumweight 21 Juan Alfonso Keb Baas 187
Light Flyweight 22 Juanito Rubillar 22
Light Flyweight 23 Nerys Espinoza 165
Flyweight 24 Bert Batawang 326
Light Flyweight 25 Kaichon Sor Vorapin 106
Flyweight 26 Shingo Yamaguchi 366
Minimumweight 27 Elliot Tokona 235
Super Flyweight 28 Rocky Fuentes 190
Minimumweight 29 Thulani Ndyamara 235
Light Flyweight 30 Tomoaki Handa 151

Minimumweight 1 Yutaka Niida 158
Minimumweight 2 Satoshi Kogumazaka 274
Minimumweight 3 Nkosinathi Joyi 130
Minimumweight 4 Eagle Kyowa 95
Light Flyweight 5 Jun Arlos 318
Minimumweight 6 Ivan Calderon 102
Minimumweight 7 Katsunari Takayama 368
Light Flyweight 8 Juan Jose Landaeta 328
Minimumweight 9 Isaac Bustos 172
Minimumweight 10 Muhammad Rachman 95
Light Flyweight 11 Jae Won Kim 318
Minimumweight 12 Mawanda Sineko 284
Minimumweight 13 Teruo Misawa 274
Light Flyweight 14 Junichiro Kaneda 274
Minimumweight 15 Toshiki Ogawa 36
Minimumweight 16 Carlos Melo 25
Minimumweight 17 Makoto Suzuki 36
Minimumweight 18 Donnie Nietes 206
Light Flyweight 19 Masatate Tsuji 445
Minimumweight 20 Oleydong Sithsamerchai 103
Minimumweight 21 Kenichi Horikawa 122
Minimumweight 22 Thobani Mbangeni 61
Minimumweight 23 Rodel Mayol 95
Minimumweight 24 Kazuma Kumada 122
Minimumweight 25 Carlo Besares 300
Minimumweight 26 Omar Soto 53
Minimumweight 27 Marti Polii 95
Minimumweight 28 Alex Aroy 229
Minimumweight 29 Gerardo Verde 271
Minimumweight 30 Benjie Sorolla 319

[nickd]

WTF ? Spinks is 17 places below Kamarzan despite beating him in his last outing.

If you think this is defensable, then you guys are weirder than I thought.

conan

Ridiculous!

[JCS]

WTF ? Spinks is 17 places below Kamarzan despite beating him in his last outing.

If you think this is defensable, then you guys are weirder than I thought.

conan

Ridiculous!

So Spinks is instantly the man after beating Karmazin (who crushed Ouma) in his own home town by a razor thin decision,.

[conan_the_cribber]

WTF ? Spinks is 17 places below Kamarzan despite beating him in his last outing.

If you think this is defensable, then you guys are weirder than I thought.

conan

Ridiculous!

So Spinks is instantly the man after beating Karmazin (who crushed Ouma) in his own home town by a razor thin decision,.

Spinks may or not be the man, but he sure as hell aint 17 spots BELOW the man he just beat.

conan

[computerrank]

... Traditional Rankings - this could be a final approach now:

- winner higher than loser -> no change for winner, loser set back by 3 ranks for KO, TKO, DQ, else by 2 ranks
- winner lower than loser -> winner gets rank of loser or just below
-- exact winner's position is geometric mean of loser's rank and geometric mean of winner's rank and loser's rank
-- r_w_new = harm(r_l, harm(r_l, r_w) )
- rank loser is 3 ranks below winner for TKO, KO, DQ, else by 2 ranks
-- example: r_l=1, r_w=10 -> r_w_new = 1, r_new_l = 3
-- example: r_l=5, r_w=20 -> r_w_new = 7, r_l_new = 9

- draw: higher ranked is treated a loser, but gets rank as a winner; loser is 1 rank below
-- example: r_d_high=1, r_d_low=10 -> r_d_high_new=1, r_d_low_new=2
-- example: r_d_high=5, r_d_low=20 -> r_d_high_new= 7, r_d_low_new=8

- inactivity:
-- a boxer is not ranked, if he didn't fight within 1 year
-- he holds his ranking in the background
-- but a boxer is dropped in the background for very period of inactivity of more than 1.5 years - this maybe multiple
-- in the background his rank is multiplied with 3 and 5 ranks added
-- in case of comeback his background rank is launched

- missing quality of oppononents:
- a boxer is dropped for missing quality of opponents;
- his rank is dropped by factor 2 + 5 ranks, if he didn't fight an opponent within factor 3 of his rank within 1.5 years
- maximum requirement for top15 boxers is to fight an opponent within rank 45

- weight division change:
-- rank is multiplied by 3 for every division step up
-- 10 ranks are added when changing to heavyweight

So that's it - and these are the results - last bout regarded from July 23, 2006 - division hint to division assigned in BoxRec - last number are days since last bout in division:

- prediction rate over all established boxers: 62 %


Heavyweight:

Heavyweight 1 Nikolay Valuev 67
Heavyweight 2 Hasim Rahman 144
Heavyweight 3 James Toney 144
Heavyweight 4 John Ruiz 235
Heavyweight 5 Wladimir Klitschko 109
Heavyweight 6 Chris Byrd 109
Heavyweight 7 Serguei Lyakhovich 130
Heavyweight 8 Ray Austin 130
Heavyweight 9 Lamon Brewster 130
Heavyweight 10 Larry Donald 312
Heavyweight 11 Calvin Brock 46
Heavyweight 12 DaVarryl Williamson 95
Heavyweight 13 Matt Skelton 32
Heavyweight 14 Luan Krasniqi 102
Heavyweight 15 Monte Barrett 361


Cruiserweight:

Cruiserweight 1 O'Neil Bell 214
Cruiserweight 2 Johnny Nelson 256
Cruiserweight 3 Guillermo Jones 340
Cruiserweight 4 Jean Marc Mormeck 214
Cruiserweight 5 Steve Cunningham 214
Cruiserweight 6 Wayne Braithwaite 340
Heavyweight 7 Kelvin Davis 340
Cruiserweight 8 Vincenzo Cantatore 81
Cruiserweight 9 Krzysztof Wlodarczyk 39
Cruiserweight 10 Virgil Hill 194
Cruiserweight 11 Vadim Tokarev 83
Cruiserweight 12 Valery Brudov 25
Cruiserweight 13 David Haye 19
Cruiserweight 14 Alexander Gurov 236
Cruiserweight 15 Dale Brown 237


Light Heavyweight:

Light Heavyweight 1 Zsolt Erdei 95
Light Heavyweight 2 Clinton Woods 88
Light Heavyweight 3 Antonio Tarver 60
Light Heavyweight 4 Glen Johnson 166
Light Heavyweight 5 Julio Gonzalez 20
Light Heavyweight 6 Roy Jones Jr 312
Light Heavyweight 7 Tomasz Adamek 298
Cruiserweight 8 Fabrice Tiozzo 529
Middleweight 9 Shannan Taylor 404
Light Heavyweight 10 Thomas Ulrich 123
Cruiserweight 11 Rico Hoye 523
Light Heavyweight 12 Stipe Drews 74
Light Heavyweight 13 Mehdi Sahnoune 291
Cruiserweight 14 Derrick Harmon 440
Super Middleweight 15 Sergio Ernesto Acuna 404


Super Middlelweight:

Super Middleweight 1 Joe Calzaghe 158
Super Middleweight 2 Markus Beyer 193
Light Middleweight 3 Fernando Vargas 501
Super Middleweight 4 Jeff Lacy 158
Super Middleweight 5 Robin Reid 368
Middleweight 6 Raymond Joval 501
Super Middleweight 7 Anthony Mundine 84
Light Heavyweight 8 Danilo Haussler 88
Super Middleweight 9 Mikkel Kessler 207
Super Middleweight 10 Danny Green 84
Light Heavyweight 11 Rudy Markussen 207
Super Middleweight 12 Carl Froch 75
Super Middleweight 13 Cristian Sanavia 82
Super Middleweight 14 Brian Magee 75
Middleweight 15 Mpush Makambi 313


Middleweight:

Middleweight 1 Ronald Wright 53
Middleweight 2 Jermain Taylor 53
Middleweight 3 Sam Soliman 159
Light Middleweight 4 Javier Alberto Mamani 480
Middleweight 5 Arthur Abraham 88
Super Middleweight 6 Mariano Natalio Carrera 347
Super Middleweight 7 Paulo Alejandro Sanchez 347
Light Middleweight 8 Vernon Forrest 389
Super Middleweight 9 Walter Javier Crucce 522
Middleweight 10 Edison Miranda 138
Super Middleweight 11 Francisco Antonio Mora 362
Middleweight 12 Howard Eastman 138
Middleweight 13 Raymond Joval 255
Light Middleweight 14 Juan Mauricio Marino 74
Light Middleweight 15 Sergio Gabriel Martinez 75


Light Middleweight:

Light Middleweight 1 Shane Mosley 25
Light Middleweight 2 Sergiy Dzinziruk 74
Light Middleweight 3 Cory Spinks 32
Light Middleweight 4 Michele Piccirillo 152
Light Middleweight 5 Oscar De La Hoya 95
Light Middleweight 6 Sergio Gabriel Martinez 130
Light Middleweight 7 Ricardo Mayorga 95
Light Middleweight 8 Roman Karmazin 32
Middleweight 9 Javier Castillejo 354
Light Middleweight 10 Attila Kovacs 67
Light Middleweight 11 Vernon Forrest 292
Welterweight 12 Thomas Damgaard 481
Light Middleweight 13 Fernando Vargas 25
Light Middleweight 14 Kassim Ouma 95
Light Middleweight 15 Sebastian Andres Lujan 74


Welterweight:

Welterweight 1 Ricky Hatton 88
Welterweight 2 Floyd Mayweather Jr 123
Welterweight 3 Sharmba Mitchell 98
Light Middleweight 4 Cory Spinks 550
Welterweight 5 Carlos Manuel Baldomir 18
Welterweight 6 Antonio Margarito 172
Light Welterweight 7 Isaac Hlatshwayo 53
Welterweight 8 Zab Judah 123
Welterweight 9 Arturo Gatti 18
Welterweight 10 Oktay Urkal 67
Welterweight 11 Frederic Klose 61
Lightweight 12 Aldo Nazareno Rios 452
Welterweight 13 Carlos Quintana 46
Welterweight 14 Luis Collazo 88
Welterweight 15 Joel Julio 46


Light Welterweight:

Welterweight 1 Ricky Hatton 256
Welterweight 2 Floyd Mayweather Jr 410
Welterweight 3 Arturo Gatti 410
Light Welterweight 4 Jose Luis Castillo 186
Lightweight 5 Diego Corrales 305
Welterweight 6 Vivian Harris 410
Light Welterweight 7 Carlos Maussa 256
Light Welterweight 8 Cesar Rene Cuenca 89
Light Welterweight 9 Miguel Angel Cotto 60
Welterweight 10 Juan Lazcano 271
Light Welterweight 11 Courtney Burton 271
Light Welterweight 12 Jason Cook 257
Light Welterweight 13 Junior Witter 292
Welterweight 14 Ted Bami 166
Lightweight 15 Matt Zegan 536


Lightweight:

Light Welterweight 1 Isaac Hlatshwayo 124
Lightweight 2 Acelino Freitas 102
Lightweight 3 Diego Corrales 459
Lightweight 4 Zahir Raheem 102
Super Featherweight 5 Erik Morales 333
Lightweight 6 Aldo Nazareno Rios 165
Lightweight 7 Joan Guzman 95
Super Featherweight 8 Cassius Baloyi 343
Lightweight 9 Sergio Eduardo Gonzalez 109
Lightweight 10 Fernando David Saucedo 74
Lightweight 11 Jesus Chavez 326
Light Welterweight 12 Jose Luis Castillo 459
Lightweight 13 Michael Katsidis 355
Super Featherweight 14 Bobby Pacquiao 305
Lightweight 15 Julio Diaz 83


Super Featherweight:

Super Featherweight 1 Manny Pacquiao 38
Super Featherweight 2 Marco Antonio Barrera 81
Super Featherweight 3 Cassius Baloyi 70
Super Featherweight 4 Erik Morales 200
Super Featherweight 5 Jorge Rodrigo Barrios 81
Featherweight 6 Martin Honorio 257
Super Featherweight 7 Oscar Larios 38
Super Featherweight 8 Lehlohonolo Ledwaba 123
Super Featherweight 9 Janos Nagy 81
Lightweight 10 Mike Anchondo 488
Featherweight 11 Terdsak Jandaeng 225
Super Featherweight 12 Alex Arthur 172
Super Featherweight 13 Robbie Peden 326
Featherweight 14 Jorge Lacierva 312
Super Featherweight 15 Rocky Juarez 81


Featherweight:

Featherweight 1 Chris John 158
Featherweight 2 Thomas Mashaba 19
Featherweight 3 Juan Manuel Marquez 158
Featherweight 4 Scott Harrison 277
Featherweight 5 Jorge Lacierva 113
Featherweight 6 Toshiaki Nishioka 186
Featherweight 7 Humberto Soto 173
Featherweight 8 Oscar Leon 173
Featherweight 9 Sandro Marcos 327
Featherweight 10 Tomas Villa 82
Featherweight 11 Johnny Tapia 327
Super Bantamweight 12 Miguel Roman 82
Super Bantamweight 13 Ivan Hernandez 379
Super Bantamweight 14 Julio Zarate 313
Featherweight 15 Spend Abazi 61


Super Bantamweight:

Super Bantamweight 1 Israel Vazquez 60
Super Bantamweight 2 Somsak Sithchatchawal 144
Bantamweight 3 Samuel Lopez 320
Super Featherweight 4 Oscar Larios 249
Super Bantamweight 5 Julio Zarate 123
Featherweight 6 Alexander Hrulev 299
Super Bantamweight 7 Takalani Ndlovu 76
Super Bantamweight 8 Fabio Daniel Oliva 110
Bantamweight 9 Veeraphol Sahaprom 173
Bantamweight 10 Heriberto Ruiz 320
Super Bantamweight 11 Katsushige Kawashima 128
Super Bantamweight 12 Celestino Caballero 186
Super Bantamweight 13 Zolani Marali 291
Super Bantamweight 14 Ratanachai Sor Vorapin 26
Super Bantamweight 15 Armando Guerrero 278


Bantamweight:

Bantamweight 1 Rafael Marquez 277
Bantamweight 2 Hozumi Hasegawa 137
Bantamweight 3 Silence Mabuza 111
Bantamweight 4 Irene Pacheco 102
Bantamweight 5 Simpiwe Vetyeka 33
Super Flyweight 6 Rosendo Alvarez 186
Bantamweight 7 Heriberto Ruiz 102
Super Bantamweight 8 Julio Zarate 529
Bantamweight 9 Jhonny Gonzalez 74
Bantamweight 10 Siyabonga Nyanga 33
Super Flyweight 11 Theo Modise 467
Bantamweight 12 Wladimir Sidorenko 25
Bantamweight 13 Fernando Montiel 74
Bantamweight 14 Ricardo Cordoba 151
Super Bantamweight 15 Katsushige Kawashima 212


Super Flyweight:

Super Flyweight 1 Masamori Tokuyama 163
Super Flyweight 2 Simon Ramoni 103
Super Bantamweight 3 Katsushige Kawashima 387
Super Flyweight 4 Nobuo Nashiro 18
Super Flyweight 5 Theo Modise 368
Super Flyweight 6 Martin Castillo 18
Super Flyweight 7 Rosendo Alvarez 284
Bantamweight 8 Fernando Montiel 284
Super Flyweight 9 Khulile Makeba 73
Super Flyweight 10 Pramuansak Posuwan 106
Light Flyweight 11 Juan Francisco Centeno Roque 509
Flyweight 12 Luis Maldonado 166
Super Flyweight 13 Cristian Mijares 166
Super Bantamweight 14 Ivan Hernandez 487
Super Flyweight 15 Masibulele Makepula 131


Flyweight:

Flyweight 1 Vic Darchinyan 67
Flyweight 2 Jorge Armando Arce 123
Flyweight 3 Lorenzo Parra 247
Flyweight 4 Pongsaklek Wonjongkam 40
Super Flyweight 5 Rosendo Alvarez 123
Flyweight 6 Brahim Asloum 25
Light Flyweight 7 Koki Kameda 96
Super Flyweight 8 Hiroyuki Hisataka 249
Flyweight 9 Akhona Aliva 152
Flyweight 10 Ayanda Ramncwana 537
Light Flyweight 11 Juanito Rubillar 519
Flyweight 12 Jose Lopez Bueno 278
Flyweight 13 Moruti Mthalane 340
Flyweight 14 Denkaosan Kaovichit 99
Flyweight 15 Randy Mangubat 538


Light Flyweight:

Light Flyweight 1 Roberto Vasquez 81
Light Flyweight 2 Muvhuso Nedzanani 75
Light Flyweight 3 Brian Viloria 172
Light Flyweight 4 Ulises Solis 137
Minimumweight 5 Tshepo Lefele 488
Light Flyweight 6 Wandee Singwangcha 22
Light Flyweight 7 Noel Arambulet 81
Light Flyweight 8 Mfundo Gwayana 271
Light Flyweight 9 Juanito Rubillar 22
Flyweight 10 Bert Batawang 326
Flyweight 11 Charitt Mukondelela 54
Light Flyweight 12 Eric Ortiz 137
Light Flyweight 13 Vuyani Kheswa 54
Flyweight 14 Mlungiseleli Xokoloshe 271
Light Flyweight 15 Jose Antonio Aguirre 172


Minimumweight:

Minimumweight 1 Yutaka Niida 158
Minimumweight 2 Eagle Kyowa 95
Minimumweight 3 Katsunari Takayama 368
Minimumweight 4 Nkosinathi Joyi 130
Minimumweight 5 Ivan Calderon 102
Light Flyweight 6 Jun Arlos 318
Minimumweight 7 Isaac Bustos 172
Light Flyweight 8 Juan Jose Landaeta 328
Light Flyweight 9 Jae Won Kim 318
Minimumweight 10 Satoshi Kogumazaka 274
Minimumweight 11 Mawanda Sineko 284
Minimumweight 12 Carlos Melo 25
Minimumweight 13 Teruo Misawa 274
Minimumweight 14 Thobani Mbangeni 61
Minimumweight 15 Toshiki Ogawa 36

[computerrank]

... Traditional Rankings - this is the final approach now:

- winner higher than loser -> no change for winner, loser set back by 3 ranks for clear decision, for close decision loser gets some rank nearer to the winner
- winner lower than loser -> winner gets rank of loser or just below, loser gets 2 ranks behind winner for close decision, 3 ranks else

- draw: higher ranked is unchanged, loser gets some rank nearer to the winner

- inactivity:
-- a boxer is not ranked, if he didn't fight within 1 year
-- he holds his ranking in the background
-- but a boxer is dropped in the background for very period of inactivity of more than 1.5 years - this maybe multiple
-- in the background his rank is multiplied with 3 and 5 ranks added
-- in case of comeback his background rank is launched

- missing quality of oppononents:
- a boxer is dropped for missing quality of opponents;
- his rank is dropped by factor 2 + 5 ranks, if he didn't fight an opponent within factor 3 of his rank within 1.5 years
- maximum requirement for top 15 boxers is to fight an opponent within rank 45

- weight division change:
-- rank is multiplied by 3 for every division step up
-- 10 ranks are added when changing to heavyweight

So that's it - and these are the results - last bout regarded from July 23, 2006 - division hint to division assigned in BoxRec - last number are days since last bout in division:

- prediction rate over all established boxers: 62 %


Heavyweight:

M Heavyweight 1 Nikolay Valuev 68
M Heavyweight 2 John Ruiz 236
M Heavyweight 3 Wladimir Klitschko 110
M Heavyweight 4 Hasim Rahman 145
M Heavyweight 5 James Toney 145
M Heavyweight 6 Chris Byrd 110
M Heavyweight 7 Calvin Brock 47
M Heavyweight 8 Larry Donald 313
M Heavyweight 9 Serguei Lyakhovich 131
M Heavyweight 10 Matt Skelton 33
M Heavyweight 11 Danny Williams 33
M Heavyweight 12 Lamon Brewster 131
M Heavyweight 13 Ray Austin 131
M Heavyweight 14 DaVarryl Williamson 96
M Heavyweight 15 Juan Carlos Gomez 439
M Heavyweight 16 Jameel McCline 20
M Heavyweight 17 Zuri Lawrence 166
M Heavyweight 18 Samuel Peter 104
M Heavyweight 19 Luan Krasniqi 103
M Heavyweight 20 Monte Barrett 362


Cruiserweight:

M Cruiserweight 1 Johnny Nelson 257
M Cruiserweight 2 Steve Cunningham 215
M Cruiserweight 3 O'Neil Bell 215
M Cruiserweight 4 Guillermo Jones 341
M Cruiserweight 5 Jean Marc Mormeck 215
M Cruiserweight 6 Wayne Braithwaite 341
M Heavyweight 7 Kelvin Davis 341
M Cruiserweight 8 Vincenzo Cantatore 82
M Cruiserweight 9 Fabrice Tiozzo 26
M Cruiserweight 10 Krzysztof Wlodarczyk 40
M Cruiserweight 11 David Haye 20
M Cruiserweight 12 Vadim Tokarev 84
M Cruiserweight 13 Alexander Gurov 237
M Cruiserweight 14 Virgil Hill 195
M Light Heavyweight 15 Mehdi Sahnoune 514
M Cruiserweight 16 Luis Andres Pineda 243
M Cruiserweight 17 Valery Brudov 26
M Cruiserweight 18 Vassiliy Jirov 112
M Cruiserweight 19 Marco Huck 68
M Cruiserweight 20 Mark Hobson 70


Light Heavyweight:

M Cruiserweight 1 Fabrice Tiozzo 530
M Light Heavyweight 2 Zsolt Erdei 96
M Light Heavyweight 3 Antonio Tarver 61
M Light Heavyweight 4 Glen Johnson 167
M Light Heavyweight 5 Clinton Woods 89
M Light Heavyweight 6 Julio Gonzalez 21
M Light Heavyweight 7 Roy Jones Jr 313
M Cruiserweight 8 Rico Hoye 524
M Light Heavyweight 9 Hugo Hernan Garay 124
M Light Heavyweight 10 Mehdi Sahnoune 292
M Light Heavyweight 11 Tomasz Adamek 299
M Light Heavyweight 12 Thomas Ulrich 124
M Cruiserweight 13 Derrick Harmon 441
M Light Heavyweight 14 Stipe Drews 75
M Cruiserweight 15 Jose Luis Herrera 110
M Middleweight 16 Shannan Taylor 405
M Light Heavyweight 17 George Khalid Jones 314
M Cruiserweight 18 Jorge Fernando Castro 110
M Light Heavyweight 19 Prince Badi Ajamu 195
M Super Middleweight 20 Sergio Ernesto Acuna 405


Super Middlelweight:

M Super Middleweight 1 Markus Beyer 194
M Super Middleweight 2 Joe Calzaghe 159
M Light Heavyweight 3 Danilo Haussler 89
M Super Middleweight 4 Robin Reid 369
M Super Middleweight 5 Jeff Lacy 159
M Light Middleweight 6 Fernando Vargas 502
M Super Middleweight 7 Cristian Sanavia 83
M Super Middleweight 8 Vitali Tsypko 265
M Middleweight 9 Raymond Joval 502
M Super Middleweight 10 Anthony Mundine 85
M Light Heavyweight 11 Rudy Markussen 208
M Super Middleweight 12 Carl Froch 76
M Middleweight 13 Mpush Makambi 314
M Super Middleweight 14 Danny Green 85
M Super Middleweight 15 Brian Magee 76
M Super Middleweight 16 Mikkel Kessler 208
M Super Middleweight 17 Mger Mkrtchian 118
M Super Middleweight 18 Jackson Chanet 26
M Super Middleweight 19 Mario Veit 75
M Super Middleweight 20 Omar Sheika 341


Middleweight:

M Middleweight 1 Ronald Wright 54
M Middleweight 2 Jermain Taylor 54
M Middleweight 3 Sam Soliman 160
M Middleweight 4 Arthur Abraham 89
M Light Middleweight 5 Vernon Forrest 390
M Light Middleweight 6 Javier Alberto Mamani 481
M Super Middleweight 7 Mariano Natalio Carrera 348
M Super Middleweight 8 Paulo Alejandro Sanchez 348
M Super Middleweight 9 Walter Javier Crucce 523
M Middleweight 10 Edison Miranda 139
M Middleweight 11 Howard Eastman 139
M Middleweight 12 Ike Quartey 250
M Middleweight 13 Raymond Joval 256
M Middleweight 14 Amin Asikainen 68
M Super Middleweight 15 Hector Javier Velazco 474
M Middleweight 16 Sebastian Sylvester 68
M Middleweight 17 Javier Castillejo 26
M Super Middleweight 18 Sakio Bika 261
M Light Middleweight 19 Sergio Gabriel Martinez 76
M Middleweight 20 Felix Sturm 26


Light Middleweight:

M Light Middleweight 1 Shane Mosley 26
M Light Middleweight 2 Rodney Jones 167
M Light Middleweight 3 Cory Spinks 33
M Light Middleweight 4 Sergiy Dzinziruk 75
M Light Middleweight 5 Kassim Ouma 96
M Light Middleweight 6 Roman Karmazin 33
M Light Middleweight 7 Oscar De La Hoya 96
M Light Middleweight 8 Sergio Gabriel Martinez 131
M Light Middleweight 9 Vernon Forrest 293
M Super Middleweight 10 Daniel Santos 250
M Light Middleweight 11 Ricardo Mayorga 96
M Welterweight 12 Thomas Damgaard 482
M Middleweight 13 Javier Castillejo 355
M Light Middleweight 14 Attila Kovacs 68
M Light Middleweight 15 Vincent Vuma 55
M Light Middleweight 16 Fernando Vargas 26
M Light Middleweight 17 Steve Conway 68
M Light Middleweight 18 Verno Phillips 127
M Light Middleweight 19 Sebastian Andres Lujan 75
M Light Middleweight 20 William Gare 174


Welterweight:

M Welterweight 1 Floyd Mayweather Jr 124
M Welterweight 2 Ricky Hatton 89
M Light Middleweight 3 Cory Spinks 551
M Welterweight 4 Sharmba Mitchell 99
M Welterweight 5 Carlos Manuel Baldomir 19
M Welterweight 6 Antonio Margarito 173
M Light Welterweight 7 Isaac Hlatshwayo 54
M Welterweight 8 Oktay Urkal 68
M Welterweight 9 Luis Collazo 89
M Welterweight 10 Frederic Klose 62
M Welterweight 11 Arturo Gatti 19
M Welterweight 12 Zab Judah 124
M Lightweight 13 Aldo Nazareno Rios 453
M Welterweight 14 Juan Lazcano 167
M Welterweight 15 Ben Tackie 26
M Welterweight 16 Carlos Quintana 47
M Light Welterweight 17 Carlos Adan Jerez 131
M Welterweight 18 Dondon Sultan 82
M Welterweight 19 Joel Julio 47
M Welterweight 20 Joseph Makaringe 167


Light Welterweight:

Welterweight 1 Ricky Hatton 256
WM Welterweight 1 Floyd Mayweather Jr 411
M Welterweight 2 Ricky Hatton 257
M Light Welterweight 3 Jose Luis Castillo 187
M Welterweight 4 Arturo Gatti 411
M Lightweight 5 Diego Corrales 306
M Light Welterweight 6 Miguel Angel Cotto 61
M Welterweight 7 Ted Bami 167
M Light Welterweight 8 Cesar Rene Cuenca 90
M Welterweight 9 Juan Lazcano 272
M Welterweight 10 Carlos Wilfredo Vilches 131
M Light Welterweight 11 Junior Witter 293
M Light Welterweight 12 Lovemore N'dou 48
M Light Welterweight 13 DeMarcus Corley 327
M Welterweight 14 Vivian Harris 411
M Light Welterweight 15 Carlos Maussa 257
M Lightweight 16 Matt Zegan 537
M Light Welterweight 17 Courtney Burton 272
M Super Featherweight 18 Jose Pablo Estrella 398
M Light Welterweight 19 Jason Cook 258
M Light Welterweight 20 Arturo Morua 41


Lightweight:

M Light Welterweight 1 Isaac Hlatshwayo 125
M Lightweight 2 Acelino Freitas 103
M Lightweight 3 Zahir Raheem 103
M Lightweight 4 Diego Corrales 460
M Lightweight 5 Joan Guzman 96
M Light Welterweight 6 Jose Luis Castillo 460
M Lightweight 7 Aldo Nazareno Rios 166
M Super Featherweight 8 Cassius Baloyi 344
M Lightweight 9 Jesus Chavez 327
M Lightweight 10 Fernando David Saucedo 75
M Super Featherweight 11 Janos Nagy 110
M Lightweight 12 Sergio Eduardo Gonzalez 110
M Lightweight 13 Matt Zegan 152
M Super Featherweight 14 Erik Morales 334
M Minimumweight 15 Nkosinathi Joyi 411
M Lightweight 16 Michael Katsidis 356
M Lightweight 17 Nate Campbell 125
M Super Featherweight 18 Bobby Pacquiao 306
M Super Featherweight 19 Manuel Medina 335
M Lightweight 20 Diego Martin Alzugaray 75


Super Featherweight:

M Super Featherweight 1 Manny Pacquiao 39
M Super Featherweight 2 Marco Antonio Barrera 82
M Super Featherweight 3 Jorge Rodrigo Barrios 82
M Super Featherweight 4 Erik Morales 201
M Super Featherweight 5 Oscar Larios 39
M Super Featherweight 6 Cassius Baloyi 71
M Super Featherweight 7 Janos Nagy 82
M Super Featherweight 8 Rocky Juarez 82
M Featherweight 9 Jorge Lacierva 313
M Super Featherweight 10 Lehlohonolo Ledwaba 124
M Featherweight 11 Martin Honorio 258
M Lightweight 12 Mike Anchondo 489
M Featherweight 13 Steven Luevano 258
M Super Featherweight 14 Alex Arthur 173
M Lightweight 15 Juan Carlos Ramirez 524
M Super Featherweight 16 Vicente Mosquera 90
M Super Featherweight 17 Jose Pablo Estrella 90
M Super Featherweight 18 Robbie Peden 327
M Super Featherweight 19 Craig Docherty 489
M Super Bantamweight 20 Fabio Daniel Oliva 174


Featherweight:

M Featherweight 1 Scott Harrison 278
M Featherweight 2 Thomas Mashaba 20
M Featherweight 3 Chris John 159
M Featherweight 4 Juan Manuel Marquez 159
M Featherweight 5 Jorge Lacierva 114
M Featherweight 6 Humberto Soto 174
M Featherweight 7 Oscar Leon 174
M Super Bantamweight 8 Julio Zarate 314
M Featherweight 9 Tomas Villa 83
M Super Bantamweight 10 Ivan Hernandez 380
M Super Bantamweight 11 Miguel Roman 83
M Featherweight 12 Spend Abazi 62
M Featherweight 13 Nedal Hussein 278
M Featherweight 14 Toshiaki Nishioka 187
M Featherweight 15 Sandro Marcos 328
M Bantamweight 16 Jhonny Gonzalez 496
M Featherweight 17 Johnny Tapia 328
M Super Featherweight 18 Adrian Valdez 496
M Bantamweight 19 Edinso Torres 327
M Featherweight 20 Shoji Kimura 124


Super Bantamweight:

M Super Bantamweight 1 Israel Vazquez 61
M Super Featherweight 2 Oscar Larios 250
M Super Bantamweight 3 Julio Zarate 124
M Super Bantamweight 4 Somsak Sithchatchawal 145
M Bantamweight 5 Samuel Lopez 321
M Super Bantamweight 6 Takalani Ndlovu 77
M Super Bantamweight 7 Celestino Caballero 187
M Featherweight 8 Yober Ortega 299
M Super Bantamweight 9 Fabio Daniel Oliva 111
M Super Bantamweight 10 Katsushige Kawashima 129
M Bantamweight 11 Mauricio Pastrana 113
M Super Featherweight 12 Ricardo Fabricio Chamorro 510
M Super Bantamweight 13 Armando Guerrero 279
M Bantamweight 14 Cesar Morales 285
M Lightweight 15 Joan Guzman 475
M Super Bantamweight 16 Zolani Marali 292
M Super Bantamweight 17 Daniel Ponce De Leon 26
M Super Bantamweight 18 Sergio Manuel Medina 97
M Bantamweight 19 Felix Machado 446
M Featherweight 20 Adam Carrera 412


Bantamweight:

M Bantamweight 1 Rafael Marquez 278
M Bantamweight 2 Wladimir Sidorenko 26
M Super Bantamweight 3 Julio Zarate 530
M Bantamweight 4 Gerry Penalosa 39
M Bantamweight 5 Silence Mabuza 112
M Super Bantamweight 6 Ivan Hernandez 111
M Bantamweight 7 Irene Pacheco 103
M Bantamweight 8 Ricardo Cordoba 152
M Bantamweight 9 Heriberto Ruiz 103
M Bantamweight 10 Jhonny Gonzalez 75
M Super Bantamweight 11 Katsushige Kawashima 213
M Super Flyweight 12 Rosendo Alvarez 187
M Bantamweight 13 Fernando Montiel 75
M Bantamweight 14 Leo Gamez 231
M Bantamweight 15 Simpiwe Vetyeka 34
M Bantamweight 16 Alejandro Valdez 82
M Bantamweight 17 Poonsawat Kratingdaenggym 26
M Bantamweight 18 Hozumi Hasegawa 138
M Featherweight 19 Jorge Lacierva 524
M Super Bantamweight 20 Ratanachai Sor Vorapin 285


Super Flyweight:

M Super Flyweight 1 Masamori Tokuyama 164
M Super Bantamweight 2 Katsushige Kawashima 388
M Super Flyweight 3 Nobuo Nashiro 19
M Super Flyweight 4 Martin Castillo 19
M Bantamweight 5 Fernando Montiel 285
M Super Bantamweight 6 Ivan Hernandez 488
M Super Flyweight 7 Rosendo Alvarez 285
M Super Flyweight 8 Alexander Munoz 201
M Super Flyweight 9 Pramuansak Posuwan 107
M Super Flyweight 10 Simon Ramoni 104
M Flyweight 11 Jose Lopez Bueno 531
M Bantamweight 12 Jose Navarro 164
M Flyweight 13 Luis Maldonado 167
M Flyweight 14 Pongsaklek Wonjongkam 377
M Super Flyweight 15 Trash Nakanuma 54
M Super Flyweight 16 Khulile Makeba 74
M Light Flyweight 17 Juan Francisco Centeno Roque 510
M Light Flyweight 18 Junichi Ebisuoka 333
M Super Flyweight 19 Theo Modise 369
M Super Flyweight 20 Cristian Mijares 167


Flyweight:

M Flyweight 1 Pongsaklek Wonjongkam 41
M Flyweight 2 Jorge Armando Arce 124
M Flyweight 3 Lorenzo Parra 248
M Flyweight 4 Vic Darchinyan 68
M Super Flyweight 5 Rosendo Alvarez 124
M Flyweight 6 Brahim Asloum 26
M Flyweight 7 Jose Lopez Bueno 279
M Light Flyweight 8 Koki Kameda 97
M Super Flyweight 9 Takefumi Sakata 143
M Super Flyweight 10 Hiroyuki Hisataka 250
M Flyweight 11 Akhona Aliva 153
M Flyweight 12 Ayanda Ramncwana 538
M Light Flyweight 13 Juan Jose Landaeta 236
M Flyweight 14 Carlos Fajardo 97
M Flyweight 15 Moruti Mthalane 341
M Flyweight 16 Monelisi Mhikiza Myekeni 132
M Super Flyweight 17 Jojo Bardon 145
M Flyweight 18 Yasuyuki Kodama 116
M Light Flyweight 19 Wandee Singwangcha 153
M Flyweight 20 Denkaosan Kaovichit 100


Light Flyweight:

M Light Flyweight 1 Roberto Vasquez 82
M Light Flyweight 2 Muvhuso Nedzanani 76
M Light Flyweight 3 Brian Viloria 173
M Light Flyweight 4 Jose Antonio Aguirre 173
M Minimumweight 5 Elliot Tokona 236
M Light Flyweight 6 Noel Arambulet 82
M Light Flyweight 7 Mfundo Gwayana 272
M Flyweight 8 Mlungiseleli Xokoloshe 272
M Flyweight 9 Charitt Mukondelela 55
M Light Flyweight 10 Ulises Solis 138
M Light Flyweight 11 Vuyani Kheswa 55
M Flyweight 12 Bert Batawang 327
M Minimumweight 13 Tshepo Lefele 489
M Light Flyweight 14 Eric Ortiz 138
M Light Flyweight 15 Will Grigsby 215
M Light Flyweight 16 Phumzile Matyhila 348
M Light Flyweight 17 Wandee Singwangcha 23
M Light Flyweight 18 Samora Msopi 40
M Light Flyweight 19 Juanito Rubillar 23
M Light Flyweight 20 Juan Jose Landaeta 488


Minimumweight:

M Minimumweight 1 Yutaka Niida 159
M Minimumweight 2 Nkosinathi Joyi 131
M Minimumweight 3 Eagle Kyowa 96
M Light Flyweight 4 Juan Jose Landaeta 329
M Minimumweight 5 Ivan Calderon 103
M Minimumweight 6 Katsunari Takayama 369
M Light Flyweight 7 Jun Arlos 319
M Minimumweight 8 Isaac Bustos 173
M Minimumweight 9 Mawanda Sineko 285
M Light Flyweight 10 Jae Won Kim 319
M Minimumweight 11 Satoshi Kogumazaka 275
M Minimumweight 12 Muhammad Rachman 96
M Minimumweight 13 Teruo Misawa 275
M Light Flyweight 14 Junichiro Kaneda 275
M Minimumweight 15 Thobani Mbangeni 62
M Minimumweight 16 Carlos Melo 26
M Minimumweight 17 Marti Polii 96
M Minimumweight 18 Rodel Mayol 96
M Minimumweight 19 Toshiki Ogawa 37
M Minimumweight 20 Oleydong Sithsamerchai 104

[jujigatame]

I'm OK with the prediction based rankings but I think it's obvious that it pushes prospects up the ladder way too fast. Sechew Powell was the #1 LMW and he got handled by Ouma. Brock is in a similar spot, there is no way a predictive system should be picking him over Wlad. Alonzo Butler is now the #31 HW after his win over a total nobody in Wheeler? He is not very good at all and most of the guys right below him would kick his ass. Strength of competition needs to be factored in much more heavily.

[JCS]

I'm OK with the prediction based rankings but I think it's obvious that it pushes prospects up the ladder way too fast. Sechew Powell was the #1 LMW and he got handled by Ouma. Brock is in a similar spot, there is no way a predictive system should be picking him over Wlad. Alonzo Butler is now the #31 HW after his win over a total nobody in Wheeler? He is not very good at all and most of the guys right below him would kick his ass. Strength of competition needs to be factored in much more heavily.

Strength of opponent is factored in, indirectly. Your gains and losses depend on the strength of opponent and the result.

[conan_the_cribber]

I'm OK with the prediction based rankings but I think it's obvious that it pushes prospects up the ladder way too fast. Sechew Powell was the #1 LMW and he got handled by Ouma. Brock is in a similar spot, there is no way a predictive system should be picking him over Wlad. Alonzo Butler is now the #31 HW after his win over a total nobody in Wheeler? He is not very good at all and most of the guys right below him would kick his ass. Strength of competition needs to be factored in much more heavily.

Hence Martins (computerranks) very gracious attempt to create a traditional ranking system. Keep reading, well see where we get.

conan

[conan_the_cribber]

Hi Martin,

The ranks are beautiful at heavy and cruiser, and for that matter, the top of light heavy, but some weird things start happening lower down. Despite all of my Australian pride, I cant see Shannon Taylor at number 12 at light heavy for any reason. Fernando Vargas makes a sudden appearance at 6 in the super middles, which is odd, seeming he's a junior middle. So I think there might be a slight programming mistake somewhere.

And some long questions to the formula above.

-- exact winner's position is geometric mean of loser's rank and geometric mean of winner's rank and loser's rank
-- r_w_new = harm(r_l, harm(r_l, r_w) )


Point 1) The formula

Why are you using such a complicated formula? The recursive use of the harmonic mean seems rather arbitrary. As described in the text and in the formula you take the harmonic mean of the higher ranking AND the generated harmonic mean of the original two rankings. This usage kind of contradicts the purpose of harmonic means, which is to compare rates of raw data values. I really dont know what this would say statistically, so I plugged some values into this formula and came up with some surprising results.

1A) it doesn't matter who the number one fighter fights, the winner will always be number 1. Even if ist the number 500 fighter, it will always be 1 (assuming you round down).
1B) it is the same for the second ranked and third ranked fighters, the lower ranked winner will always become number 2 or 3.
1C) The recursive harmonic mean only starts showing an effect, when the higher rank is greater than 4. Then a match up between 4 and 20 will result in the lower ranked fighter being ranked at 5 instead of 4.
1D) The effects become more pronounced, once the lower of the two rankings gets higher. This is a bit unfair for the lower ranked winner and is almost certainly affecting the predictability of the ratings. If I put in a higher rank of 20 and a lower of 25, then the lower ranked winner only gets advanced to place 21. I cant see this mirroring reality. The win against a nearly ranked peer, a crossroads fight, is one of the most important fights to weight a fighter. As far as I'm concerned, if 25 beats 20 then he should have number 20's spot at the very least.
1E) This gets worse for 'gatekeeper' fights. If 20 fights 80 and loses, then 80 ends up at 24 and the loser ends up at 26 or 27. In order to mirror real life, I think 80 should finish at 20 and the previous 20 should be sent tumbling down the rankings (actually 26 or 27 is quite nice for the first loss of this nature).

To sum up point 1. The recursive use of the harmonic mean is not really affecting the top fighters and penalizing the crossroad fights and gatekeeper fights. It might be just better, in the case of an 'upset' to just give the winner the losers rank.

Point 2) Dropping further due to successive losses.

There may be practical (or time) reasons why you haven't implemented this, but I think it will definitely improve the predictability of the rankings. Using the formula above, a fighter can stay around forever despite woeful performances. To use an example.

2A) If number 80 beats 20 by KO, then 20 moves to 24 and the loser drops to 27. Lets give the loser a name, lets say Julius Francis.
2B) If Julius Francis fights the new number 80 again, and loses again via KO, then he will land on spot 35.
2C) I continued this for the next few iterations, each time Francis loses via KO to the 80th ranked fighter. He progresses from 20 to 27 to 35 to 43 to 51. That means after five successive KO losses to 80th ranked (or thereabouts) fighters, he ONLY drops to 51. I tell you, there's no way I want anyone like that in my top 50, you cant call him a gatekeeper any more, the guy is a doormat.

This is my point. If a guy has started losing repeatadly to lower ranked fighters, without any victories against equal or better fighters, then the guy needs to drop dramatically. We've all seen it in real life, the point where age or attrition chips in and the fighter just doesnt have what it takes to win any more. The initial win against such fighters should be appropriately rewarded, but if I'm the fifth guy in a row to beat up on a Julius Francis, then it really means nothing.

To sum up. I think the predictability of the traditional rankings would be improved dramatically by accelerating the fall of fighters such as Julius Francis. I suggested an algorithm previously, that took into that account, not only the number of successive losses, but also the difference in quality of the rankings. Perhaps you could use this formula instead, which uses the harmonic mean as a multiplier.

r_w_new = r_l and
r_l_new = 1+ r_l + num_suc_losses * ( harm(r_w, r_l) - r_l)

Note: num_suc_losses means number of successive losses to lower ranked fighters without a win against a higher ranked fighter.

Using this formula, Julius Francis would progress this way down the rankings.

1st loss, was 20, lost to 80. Gets new rank 33
2nd loss, was 33, lost to 80. Gets new rank of 61.
3rd loss, was 61, lost to 80. Gets new rank of 86!

I consider this appropriate, three straight losses to number 80 ranked and you really are only 80 odd yourself. I tested this with the top of the ranking system, with a former number one losing to 10th ranked fighters.

1st loss, was 1, lost to 10. Gets new rank of 2.
2nd loss, was 2, lost to 10. Gets new rank of 5.
3rd loss, was 5, lost to 10. Gets new rank of 11 (note the fall not so dramatic, because the diff between 5 and 10 not so big).

However a fourth loss to an up and comer and the former number one is toast e.g. if RJJ had lost to Prince Badi.....

4th loss, was 11, lost to 50. Gets new rank of 40.

And finally to add some comparisons for a fringe contendor, if the fight was between 11 and 50.

1st loss, was 11, lost to 50. Gets new rank of 19.
2nd loss, was 11, lost to 50. Gets new rank of 26.
3rd loss, was 11, lost to 50. Gets new rank of 33.

And for laughs, a couple of tomato cans.

1st loss, was 100, lost to 300. Gets new rank of 151
2nd loss, was 151, lost to 300. Gets new rank of 251
3rd loss, was 251, lost to 300. Gets new rank of 318.

All in all, the formula seems to work for the top, middle and end of the rankings list.

Thanks in advance for any implementation of the above ideas.

conan

[jujigatame]

I'm OK with the prediction based rankings but I think it's obvious that it pushes prospects up the ladder way too fast. Sechew Powell was the #1 LMW and he got handled by Ouma. Brock is in a similar spot, there is no way a predictive system should be picking him over Wlad. Alonzo Butler is now the #31 HW after his win over a total nobody in Wheeler? He is not very good at all and most of the guys right below him would kick his ass. Strength of competition needs to be factored in much more heavily.

Strength of opponent is factored in, indirectly. Your gains and losses depend on the strength of opponent and the result.

I'm aware of this. What I'm saying is that there needs to be a more drastic dropoff for how many points you get for fighting garbage opponents. Alonzo Butler going up 40-50 points (which equated to like 16 spots in the rankings) for shutting out Wheeler is just ridiculous. At absolute most that should have been a 5-10 point win.

[JCS]

I'm OK with the prediction based rankings but I think it's obvious that it pushes prospects up the ladder way too fast. Sechew Powell was the #1 LMW and he got handled by Ouma. Brock is in a similar spot, there is no way a predictive system should be picking him over Wlad. Alonzo Butler is now the #31 HW after his win over a total nobody in Wheeler? He is not very good at all and most of the guys right below him would kick his ass. Strength of competition needs to be factored in much more heavily.

Strength of opponent is factored in, indirectly. Your gains and losses depend on the strength of opponent and the result.

I'm aware of this. What I'm saying is that there needs to be a more drastic dropoff for how many points you get for fighting garbage opponents. Alonzo Butler going up 40-50 points (which equated to like 16 spots in the rankings) for shutting out Wheeler is just ridiculous. At absolute most that should have been a 5-10 point win.

Well, if anyone else had a similar win over an opponent who was a similar amount of points behind them, they would've raised by an equal amount.

Fighters lose a fraction of their points each day.. so he will probably slide back some as he's past.

[jujigatame]

Well, if anyone else had a similar win over an opponent who was a similar amount of points behind them, they would've raised by an equal amount.

Two wrongs don't make a right. Looking at the ratings description, I think you need to jack up the R_DIFF value quite a bit. Having junky wins count for so much is creating a lot of anomalies (like JD Chapman nearing the top 50) and generally allowing undefeated bum-beaters to make huge undeserved leaps.

[computerrank]

@conan

- only results in division count - as there is a lot of trouble, if you transform ranks from other divisions - you referred to some bad examples
-- Shannon Taylor at number 12 at light heavy for any reason
-- Fernando Vargas

- winner gets rating of loser in any case if higher

- higher loser down depending on result and distance to lower winner
-- your proposal is not just in balance, as the winner gets too much = loser's rank, if you punish the loser too much
-- so I took the 0.25 of the logarithmic distance + 2 ranks for a close loss
-- I took 0.5 of the logarithmic distance + 3 ranks for another loss
-- this pretty fine puts down the continious higher loser

These are the results - prediction rate up to 65%:

Heavyweight

M Heavyweight 1 Nikolay Valuev 68
M Heavyweight 2 Wladimir Klitschko 110
M Heavyweight 3 John Ruiz 236
M Heavyweight 4 James Toney 145
M Heavyweight 5 Hasim Rahman 145
M Heavyweight 6 Chris Byrd 110
M Heavyweight 7 Matt Skelton 33
M Heavyweight 8 Calvin Brock 47
M Heavyweight 9 Serguei Lyakhovich 131
M Heavyweight 10 Monte Barrett 362
M Heavyweight 11 Kevin McBride 131
M Heavyweight 12 Lamon Brewster 131
M Heavyweight 13 Samuel Peter 104
M Heavyweight 14 Damian Wills 63
M Heavyweight 15 Danny Williams 33
M Heavyweight 16 Luan Krasniqi 103
M Heavyweight 17 Zuri Lawrence 166
M Heavyweight 18 Vladimir Virchis 26
M Heavyweight 19 Ruslan Chagaev 26
M Heavyweight 20 DaVarryl Williamson 96

Cruiserweight

M Cruiserweight 1 Johnny Nelson 257
M Cruiserweight 2 O'Neil Bell 215
M Cruiserweight 3 Guillermo Jones 341
M Cruiserweight 4 Vincenzo Cantatore 82
M Cruiserweight 5 Jean Marc Mormeck 215
M Cruiserweight 6 Steve Cunningham 215
M Cruiserweight 7 Wayne Braithwaite 341
M Heavyweight 8 Kelvin Davis 341
M Cruiserweight 9 Krzysztof Wlodarczyk 40
M Cruiserweight 10 David Haye 20
M Cruiserweight 11 Aloryi Moyoyo Mensah 90
M Cruiserweight 12 Antonio Mercado 180
M Cruiserweight 13 Enzo Maccarinelli 33
M Cruiserweight 14 Alexander Gurov 237
M Cruiserweight 15 Marco Huck 68
M Cruiserweight 16 Vincenzo Rossitto 26
M Cruiserweight 17 Patrick Nwamu 238
M Cruiserweight 18 Dale Brown 238
M Cruiserweight 19 Danny Batchelder 168
M Cruiserweight 20 Virgil Hill 195

Light Heavyweight

M Light Heavyweight 1 Zsolt Erdei 96
M Cruiserweight 2 Fabrice Tiozzo 530
M Light Heavyweight 3 Clinton Woods 89
M Light Heavyweight 4 Glen Johnson 167
M Light Heavyweight 5 Julio Gonzalez 21
M Light Heavyweight 6 Hugo Hernan Garay 124
M Light Heavyweight 7 Roy Jones Jr 313
M Cruiserweight 8 Rico Hoye 524
M Cruiserweight 9 Jose Luis Herrera 110
M Light Heavyweight 10 Tomasz Adamek 299
M Light Heavyweight 11 Thomas Ulrich 124
M Light Heavyweight 12 Paul Briggs 299
M Light Heavyweight 13 Stipe Drews 75
M Light Heavyweight 14 Chad Dawson 69
M Light Heavyweight 15 George Khalid Jones 314
M Light Heavyweight 16 Gabriel Campillo 250
M Light Heavyweight 17 Kai Kurzawa 75
M Light Heavyweight 18 Montell Griffin 132
M Super Middleweight 19 Alejandro Berrio 475
M Super Middleweight 20 Joe Spina 260

Super Middleweight

M Super Middleweight 1 Markus Beyer 194
M Super Middleweight 2 Mikkel Kessler 208
M Super Middleweight 3 Anthony Mundine 85
M Super Middleweight 4 Joe Calzaghe 159
M Light Heavyweight 5 Danilo Haussler 89
M Super Middleweight 6 Jeff Lacy 159
M Super Middleweight 7 Danny Green 85
M Super Middleweight 8 Cristian Sanavia 83
M Super Middleweight 9 Peter Manfredo Jr 178
M Super Middleweight 10 Robin Reid 369
M Super Middleweight 11 Mger Mkrtchian 118
M Super Middleweight 12 Omar Sheika 341
M Super Middleweight 13 Carl Froch 76
M Super Middleweight 14 Vitali Tsypko 265
M Super Middleweight 15 Mario Veit 75
M Middleweight 16 John Humphrey 467
M Super Middleweight 17 Robert Stieglitz 250
M Super Middleweight 18 Lucian Bute 86
M Super Middleweight 19 Alejandro Berrio 83
M Cruiserweight 20 Lawrence Chapman 481

Middleweight

M Middleweight 1 Jermain Taylor 54
M Super Middleweight 2 Mariano Natalio Carrera 348
M Middleweight 3 Ronald Wright 54
M Middleweight 4 Arthur Abraham 89
M Super Middleweight 5 Paulo Alejandro Sanchez 348
M Middleweight 6 Edison Miranda 139
M Middleweight 7 Amin Asikainen 68
M Middleweight 8 Javier Castillejo 26
M Light Middleweight 9 Javier Alberto Mamani 481
M Super Middleweight 10 Sakio Bika 261
M Super Middleweight 11 Hector Javier Velazco 474
M Super Middleweight 12 Morrade Hakkar 390
M Middleweight 13 Keiji Eguchi 137
M Middleweight 14 Khoren Gevor 156
M Middleweight 15 Yoshihiro Araki 261
M Super Middleweight 16 Ian Gardner 401
M Middleweight 17 Jorge Sendra 27
M Middleweight 18 Raymond Joval 256
M Super Middleweight 19 Peter Mashamaite 398
M Super Middleweight 20 Walter Javier Crucce 523

Light Middleweight

M Light Middleweight 1 Shane Mosley 26
M Middleweight 2 Jamie Moore 195
M Light Middleweight 3 Sergiy Dzinziruk 75
M Light Middleweight 4 Attila Kovacs 68
M Light Middleweight 5 Cory Spinks 33
M Light Middleweight 6 Sergio Gabriel Martinez 131
M Light Middleweight 7 Vincent Vuma 55
M Light Middleweight 8 Steve Conway 68
M Light Middleweight 9 Reda Zam Zam 62
M Welterweight 10 Joel Julio 166
M Light Middleweight 11 Badru Lusambya 75
M Light Middleweight 12 William Gare 174
M Light Middleweight 13 Kassim Ouma 96
M Light Middleweight 14 Wayne Alexander 159
M Middleweight 15 Sebastien Demers 28
M Light Middleweight 16 Joachim Alcine 48
M Middleweight 17 Damien Bertu 89
M Light Middleweight 18 Ian MacKillop 20
M Middleweight 19 Carlos Bojorquez 544
M Super Middleweight 20 Daniel Santos 250

M Welterweight

Welterweight 1 Carlos Manuel Baldomir 19
M Welterweight 2 Antonio Margarito 173
M Welterweight 3 Floyd Mayweather Jr 124
M Light Welterweight 4 Lamont Peterson 104
M Welterweight 5 Ricky Hatton 89
M Welterweight 6 Dondon Sultan 82
M Light Middleweight 7 Marco Antonio Avendano 146
M Welterweight 8 Oktay Urkal 68
M Welterweight 9 Kevin Anderson 70
M Welterweight 10 Michel Trabant 187
M Welterweight 11 Joseph Makaringe 167
M Welterweight 12 Hiroshi Yamaguchi 112
M Welterweight 13 Joshua Okine 314
M Welterweight 14 Michèle Orlando 187
M Welterweight 15 Kermit Cintron 113
M Welterweight 16 Antonio Pitalua 134
M Welterweight 17 Arturo Gatti 19
M Light Middleweight 18 Kazuhiko Hidaka 250
M Light Middleweight 19 Cory Spinks 551
M Welterweight 20 Luis Collazo 89

Light Welterweight

M Welterweight 1 Ricky Hatton 257
M Welterweight 2 Floyd Mayweather Jr 411
M Welterweight 3 Kendall Holt 440
M Light Welterweight 4 Carlos Maussa 257
M Light Welterweight 5 Junior Witter 293
M Light Welterweight 6 Juan Urango 41
M Light Welterweight 7 Herman Ngoudjo 78
M Light Welterweight 8 Andreas Kotelnik 103
M Light Welterweight 9 Jonathan Thaxton 89
M Light Welterweight 10 Cesar Rene Cuenca 90
M Light Welterweight 11 Arturo Morua 41
M Welterweight 12 Arturo Gatti 411
M Welterweight 13 Henry Bruseles 103
M Light Welterweight 14 Juho Tolppola 97
M Light Welterweight 15 Souleymane M'baye 33
M Light Welterweight 16 Giorgio Marinelli 62
M Welterweight 17 Carlos Wilfredo Vilches 131
M Light Welterweight 18 Lovemore N'dou 48
M Light Welterweight 19 Naoufel Ben Rabah 41
M Light Welterweight 20 Juan Carlos Rodriguez 243

Lightweight

M Lightweight 1 Diego Corrales 460
M Lightweight 2 Jesus Chavez 327
M Light Welterweight 3 Isaac Hlatshwayo 125
M Light Welterweight 4 Jose Luis Castillo 460
M Lightweight 5 Fernando David Saucedo 75
M Lightweight 6 Juan Carlos Diaz Melero 188
M Lightweight 7 Graham Earl 195
M Lightweight 8 Aldo Nazareno Rios 166
M Light Welterweight 9 Fernando Angulo 299
M Lightweight 10 Nate Campbell 125
M Lightweight 11 Julio Diaz 84
M Welterweight 12 Stevie Johnston 299
M Lightweight 13 Diego Martin Alzugaray 75
M Featherweight 14 Juan Gerardo Cabrera 78
M Lightweight 15 Juan Diaz 26
M Lightweight 16 Joan Guzman 96
M Lightweight 17 Ricky Quiles 84
M Featherweight 18 Valdemir Pereira 383
M Lightweight 19 Giovanni Niro 26
M Super Featherweight 20 Ricky Burns 419

Super Featherweight

M Super Featherweight 1 Marco Antonio Barrera 82
M Super Featherweight 2 Cassius Baloyi 71
M Super Featherweight 3 Jorge Rodrigo Barrios 82
M Super Featherweight 4 Alex Arthur 173
M Super Featherweight 5 Robbie Peden 327
M Lightweight 6 Nate Campbell 533
M Lightweight 7 Mike Anchondo 489
M Super Featherweight 8 Ali Funeka 19
M Super Featherweight 9 Vicente Mosquera 90
M Super Featherweight 10 Manuel Medina 71
M Lightweight 11 Jesus Chavez 439
M Super Featherweight 12 Jasper Seroka 104
M Super Featherweight 13 Craig Docherty 489
M Super Featherweight 14 Nobuhito Honmo 82
M Super Featherweight 15 Manny Pacquiao 39
M Super Featherweight 16 Javier Osvaldo Alvarez 139
M Super Featherweight 17 Janos Nagy 82
M Super Featherweight 18 Rocky Juarez 82
M Featherweight 19 Martin Honorio 258
M Super Featherweight 20 Danile Botman 467

Featherweight

M Featherweight 1 Chris John 159
M Featherweight 2 Sandro Marcos 328
M Featherweight 3 Scott Harrison 278
M Featherweight 4 Juan Manuel Marquez 159
M Featherweight 5 Robert Guerrero 48
M Featherweight 6 Tomas Villa 83
M Featherweight 7 Thomas Mashaba 20
M Featherweight 8 Gamaliel Diaz 48
M Featherweight 9 Humberto Soto 174
M Super Featherweight 10 Adrian Valdez 496
M Featherweight 11 Oscar Leon 174
M Featherweight 12 Jorge Solis 20
M Featherweight 13 Hiroyuki Enoki 201
M Super Featherweight 14 Ricardo Ariel Elias 391
M Super Bantamweight 15 Ricardo Castillo 250
M Featherweight 16 Lizardo Moreno 20
M Super Bantamweight 17 Adolfo Landeros 299
M Lightweight 18 Joan Guzman 349
M Featherweight 19 Jorge Lacierva 114
M Super Bantamweight 20 Fabio Daniel Oliva 391

Super Bantamweight

M Super Bantamweight 1 Somsak Sithchatchawal 145
M Super Bantamweight 2 Israel Vazquez 61
M Super Bantamweight 3 Celestino Caballero 187
M Super Featherweight 4 Oscar Larios 250
M Super Bantamweight 5 Salem Bouaita 475
M Super Bantamweight 6 Daniel Ponce De Leon 26
M Super Bantamweight 7 Wethya Sakmuangklang 119
M Featherweight 8 Yober Ortega 299
M Super Bantamweight 9 Michael Hunter 48
M Super Bantamweight 10 Ricardo Castillo 96
M Bantamweight 11 Samuel Lopez 321
M Super Bantamweight 12 Zolani Marali 292
M Lightweight 13 Joan Guzman 475
M Super Bantamweight 14 Takalani Ndlovu 77
M Featherweight 15 Adam Carrera 412
M Featherweight 16 Jeffrey Mathebula 482
M Super Bantamweight 17 Daisuke Yamanaka 54
M Super Bantamweight 18 Tuncay Kaya 48
M Super Bantamweight 19 Sergio Manuel Medina 97
M Super Featherweight 20 Ricardo Fabricio Chamorro 510

Bantamweight

M Bantamweight 1 Hozumi Hasegawa 138
M Bantamweight 2 Rafael Marquez 278
M Bantamweight 3 Simone Maludrottu 111
M Bantamweight 4 Jhonny Gonzalez 75
M Super Bantamweight 5 Ratanachai Sor Vorapin 285
M Bantamweight 6 Silence Mabuza 112
M Bantamweight 7 Wladimir Sidorenko 26
M Bantamweight 8 Veeraphol Sahaprom 138
M Bantamweight 9 Carmelo Ballone 271
M Bantamweight 10 Poonsawat Kratingdaenggym 26
M Super Bantamweight 11 Julio Zarate 530
M Super Flyweight 12 Ali Rochmad 338
M Bantamweight 13 Ricardo Cordoba 152
M Bantamweight 14 Irene Pacheco 103
M Flyweight 15 Luis Maldonado 285
M Bantamweight 16 Sasha Bakhtin 171
M Super Bantamweight 17 Joel Bauya 443
M Bantamweight 18 Simpiwe Vetyeka 34
M Bantamweight 19 Mauricio Martinez 82
M Bantamweight 20 Vusi Malinga 132

Super Flyweight

M Super Flyweight 1 Masamori Tokuyama 164
M Bantamweight 2 Fernando Montiel 285
M Super Flyweight 3 Nobuo Nashiro 19
M Super Bantamweight 4 Katsushige Kawashima 388
M Super Flyweight 5 Luis Alberto Perez 96
M Super Bantamweight 6 Ivan Hernandez 488
M Super Flyweight 7 Martin Castillo 19
M Super Flyweight 8 Simon Ramoni 104
M Super Bantamweight 9 Jose Nieves 288
M Super Flyweight 10 Pramuansak Posuwan 107
M Bantamweight 11 Jose Navarro 164
M Bantamweight 12 Masayuki Arinaga 248
M Super Flyweight 13 Theo Modise 369
M Featherweight 14 Luis Bolano 467
M Super Flyweight 15 Dimitri Kirilov 96
M Flyweight 16 Alejandro Hernandez 251
M Super Flyweight 17 Alexander Munoz 201
M Bantamweight 18 Prosper Matsuura 261
M Super Flyweight 19 Z Gorres 145
M Super Flyweight 20 Simpiwe Nongqayi 348

Flyweight

M Flyweight 1 Pongsaklek Wonjongkam 41
M Flyweight 2 Lorenzo Parra 248
M Flyweight 3 Vic Darchinyan 68
M Flyweight 4 Omar Andres Narvaez 248
M Flyweight 5 Denkaosan Kaovichit 100
M Super Flyweight 6 Takefumi Sakata 143
M Flyweight 7 Brahim Asloum 26
M Flyweight 8 Jose Lopez 131
M Flyweight 9 Jose Lopez Bueno 279
M Light Flyweight 10 Giuseppe Lagana 314
M Flyweight 11 Jorge Armando Arce 124
M Flyweight 12 Ivan Pozo 244
M Light Flyweight 13 Petchtapee Pinsinchai 272
M Flyweight 14 Bernard Inom 56
M Flyweight 15 Maxsaisai Pinsinchai 88
M Flyweight 16 Alejandro Hernandez 26
M Flyweight 17 Christophe Rodrigues 285
M Flyweight 18 Alain Bonnel 212
M Flyweight 19 Randy Mangubat 539
M Flyweight 20 Daisuke Naito 44

Light Flyweight

M Light Flyweight 1 Ulises Solis 138
M Light Flyweight 2 Roberto Vasquez 82
M Light Flyweight 3 Munetsugu Kayo 59
M Light Flyweight 4 Muvhuso Nedzanani 76
M Flyweight 5 Nelson Dieppa 76
M Light Flyweight 6 Will Grigsby 215
M Light Flyweight 7 Hugo Fidel Cazares 41
M Flyweight 8 Charitt Mukondelela 55
M Light Flyweight 9 Takahisa Masuda 241
M Light Flyweight 10 Wandee Singwangcha 23
M Light Flyweight 11 Vuyani Kheswa 55
M Light Flyweight 12 Mfundo Gwayana 272
M Minimumweight 13 Juan Alfonso Keb Baas 188
M Light Flyweight 14 Nerys Espinoza 166
M Light Flyweight 15 Sonny Boy Jaro 243
M Flyweight 16 Ken Nakajima 493
M Minimumweight 17 Walberto Ramos 82
M Light Flyweight 18 Edgar Sosa 41
M Flyweight 19 Bert Batawang 327
M Light Flyweight 20 Ernesto Castro 137

Minimumweight

M Minimumweight 1 Nkosinathi Joyi 131
M Minimumweight 2 Yutaka Niida 159
M Minimumweight 3 Eagle Kyowa 96
M Light Flyweight 4 Juan Jose Landaeta 329
M Minimumweight 5 Mawanda Sineko 285
M Minimumweight 6 Katsunari Takayama 369
M Minimumweight 7 Satoshi Kogumazaka 275
M Minimumweight 8 Ivan Calderon 103
M Minimumweight 9 Muhammad Rachman 96
M Minimumweight 10 Thobani Mbangeni 62
M Minimumweight 11 Isaac Bustos 173
M Light Flyweight 12 Jun Arlos 319
M Minimumweight 13 Teruo Misawa 275
M Light Flyweight 14 Junichiro Kaneda 275
M Minimumweight 15 Toshiki Ogawa 37
M Minimumweight 16 Carlos Melo 26
M Minimumweight 17 Gabriel Pumar 132
M Minimumweight 18 Rodel Mayol 96
M Minimumweight 19 Kenichi Horikawa 123
M Minimumweight 20 Pornsawan Kratingdaenggym 134

[conan_the_cribber]

Hi Martin,

as always, some questions.

@conan
- only results in division count - as there is a lot of trouble, if you transform ranks from other divisions - you referred to some bad examples
-- Shannon Taylor at number 12 at light heavy for any reason
-- Fernando Vargas

I am not sure what point you are trying to make here. I indicated that Taylor and Vargas are an indication that the algorithm is not really complete. I looked at the results you posted and I can see that Hatton is ranked in two divisions. One boxer, one division is pretty much a necessity for rankings.

I can see that division jumpers are one massive pain in the arse for algorithm. What's your strategy for someone who goes down a division. Do they also get multiplied by three?

- winner gets rating of loser in any case if higher

Good.

- higher loser down depending on result and distance to lower winner
-- your proposal is not just in balance, as the winner gets too much = loser's rank, if you punish the loser too much
-- so I took the 0.25 of the logarithmic distance + 2 ranks for a close loss
-- I took 0.5 of the logarithmic distance + 3 ranks for another loss
-- this pretty fine puts down the continious higher loser

I dont agree with 'not in balance'. I dont see the argument. The formula I gave hardly punished the initial loss of the loser at all. A multiplier to deal with subsequent losses is important to negate people like Mora who really only had one decent (or lucky) win against Kirk Johnson.

Could you please explain how the algorithm works for losses. Are you tracking pure losses, or losses against lower ranked fighters? Does the 0.5 log distance + 3 ranks apply to each successive loss?

These are the results - prediction rate up to 65%:

Getting there prediction wise. Not so much difference at the moment, maybe it will get better once we sought out a few other problems, like the division changes.

Some of the rankings below are hard to explain. I have editted the list above. I think the algorithm still needs some work somewhere along the line. Maybe when the duplicates are out or something.


Light Heavyweight

M Light Heavyweight 6 Hugo Hernan Garay 124

Who did Garay beat to get that high? Are you handling MD's like Majority Draws instead of Majority decisions?

Super Middleweight

M Super Middleweight 1 Markus Beyer 194
M Super Middleweight 2 Mikkel Kessler 208
M Super Middleweight 3 Anthony Mundine 85
M Super Middleweight 4 Joe Calzaghe 159

It's very odd that Beyer ends up on top. I would've imagined that after ottke's retirement, Calzaghe would've been lefton top. For Mundine to be above Calzaghe, Green must have been above him and before that Lucas above Calzaghe. That is odd.

Middleweight

M Middleweight 1 Jermain Taylor 54
M Super Middleweight 2 Mariano Natalio Carrera 348
M Middleweight 3 Ronald Wright 54
M Middleweight 4 Arthur Abraham 89

Something is very odd there. Carrera has done nothing to get so high.

Light Middleweight

M Light Middleweight 1 Shane Mosley 26
M Middleweight 2 Jamie Moore 195

Something is very odd there. Moore has done nothing to get so high. I think I'll stop now, something is clearly wrong with the algorithm e.g. division changes

[conan_the_cribber]

- higher loser down depending on result and distance to lower winner
-- your proposal is not just in balance, as the winner gets too much = loser's rank, if you punish the loser too much
-- so I took the 0.25 of the logarithmic distance + 2 ranks for a close loss
-- I took 0.5 of the logarithmic distance + 3 ranks for another loss
-- this pretty fine puts down the continious higher loser

Hi Martin,

This approach is not working for me. The log distance effect is really miniscule. Taking 0.25 or 0.5 of it is practically reduces the effect to a maximum of one extra rank. As described before, Julius Francis starting at rank 20 will only end up at rank 51 despite 5 KO losses in a row to rank 80 fighters. You are not punishing the losers enough. Also, any top fighter will drop at least to 3 or 4 in the rankings, even if he fought the number 2 fighter.

The number of successive losses is critical to a good algorithm. It matches real life ranking thinking well. We've all seen fighters who just cant win anymore, they have to disappear downwards. The career of a boxer is not symmetric. The downhill slide is a lot quicker than the uphill battle. The number of successive losses against lower ranked fighters is a good indication of when that slide is happening. This indication is missing in the log stuff, in fact the brakes are put on the downhill slide.

In my algorithm suggestion I used the difference between the harmonic mean and the original ranking as a measure of the 'shock' of the victory. This worked out surprisingly well in the examples in all ranges of data. I would love to see what effect it would have on the predictability.

conan