BoxRec

computerrank wrote: ↑02 Jul 2021, 10:34

Manrae wrote: ↑02 Jul 2021, 07:49 So…you are willing to see Tank’s ranking as a catalyst for change, but can’t see the problem with Tim Tszyu over Jermell Charlo

The discussion about Davis' ranking was a catalyst, yes, but not the reason to change anything. The discussion lead me into finding a lot of top boxers with a massive unbalance between WHR rating and best opponent rating in recent time.

So introducing a rating cap would make a good additional rule for the BoxRec ratings, I now think.

Meanwhile I generalized the cap rules a bit:
- look into all bouts in boxers profile - not only the last 3 years
- give all bouts between 3 year ago and 6 years ago a weight of 0.5 (for the last 3 years weight 1)
- give all bouts between 6 year ago and 9 years ago a weight of 0.25 ... etc

That changes the results - and also the Tszyu / Carlo case - see below.

computerrank wrote: ↑02 Jul 2021, 04:49

jujigatame wrote: ↑01 Jul 2021, 18:24

computerrank wrote: ↑01 Jul 2021, 06:09 Jermell Carlo:
- cap version: pretty easy to understand, his best defeated opponent within last 3 years was only 10% of his rating
- close-rating version: same point, ratios 10% and below, only exception Harrison and that was a loss

The fundamental cause of improving the rating with inferior opponents clearly defeated is that the probability for a 100% win always is lower than 100%. So the winner still will get a bit.

If this is the case then maybe the solution here is to reduce the value of all wins to some degree? If KOs and dominant decisions are valued at 1.0 and fighters with poor opposition get overrated because 1.0 is always greater than the ratio in their point differences (so they are always outperforming the expected result) then maybe the solution is to make the max win value less than 1.0.

This results in a loss of prediction power. Taking a value of 0.9 for a clear win reduces the winner prediction ratio from 84% to below 80%.

gregregegg wrote: ↑03 Jul 2021, 01:57 Crawford vs brook, crawford vs Kahn, AJ vs pov, AJ vs pulev, AJ vs ruiz (both), Wilder vs ortiz (both), jeff horn vs man pac ect are 5 star fights.....

mike tyson vs holifeild, Lennox lewis vs hollifeild, Ali vs fraiser, Ali vs forman, Durran vs lennard II, Haggler vs Duran are 4 star fights....


This absolutly was not the case untill recently. kinda sets alarm bells when crawford vs brook, an unwanted missmatch is somehow a higher star rating than some of the greatest fights of all time....

gregregegg wrote: ↑03 Jul 2021, 01:57 Crawford vs brook, crawford vs Kahn, AJ vs pov, AJ vs pulev, AJ vs ruiz (both), Wilder vs ortiz (both), jeff horn vs man pac ect are 5 star fights.....

mike tyson vs holifeild, Lennox lewis vs hollifeild, Ali vs fraiser, Ali vs forman, Durran vs lennard II, Haggler vs Duran are 4 star fights....


This absolutly was not the case untill recently. kinda sets alarm bells when crawford vs brook, an unwanted missmatch is somehow a higher star rating than some of the greatest fights of all time....

gregregegg wrote: ↑03 Jul 2021, 01:57 Crawford vs brook, crawford vs Kahn, AJ vs pov, AJ vs pulev, AJ vs ruiz (both), Wilder vs ortiz (both), jeff horn vs man pac ect are 5 star fights.....

mike tyson vs holifeild, Lennox lewis vs hollifeild, Ali vs fraiser, Ali vs forman, Durran vs lennard II, Haggler vs Duran are 4 star fights....


This absolutly was not the case untill recently. kinda sets alarm bells when crawford vs brook, an unwanted missmatch is somehow a higher star rating than some of the greatest fights of all time....

Rocky- wrote: ↑03 Jul 2021, 16:48

gregregegg wrote: ↑03 Jul 2021, 01:57 Crawford vs brook, crawford vs Kahn, AJ vs pov, AJ vs pulev, AJ vs ruiz (both), Wilder vs ortiz (both), jeff horn vs man pac ect are 5 star fights.....

mike tyson vs holifeild, Lennox lewis vs hollifeild, Ali vs fraiser, Ali vs forman, Durran vs lennard II, Haggler vs Duran are 4 star fights....


This absolutly was not the case untill recently. kinda sets alarm bells when crawford vs brook, an unwanted missmatch is somehow a higher star rating than some of the greatest fights of all time....

Crazy. The latest ratings are utter trash. On what planet was Brook vs Crawford a 5 star fight?
Julio Cesar Chavez Jr vs Danny Jacobs a 3 star fight? This is the same dude that lost to a 46-year-old Anderson Silva. Kazuto Takesako a 4 star fighter for beating taxi drivers? Jesus

pugilisticspecialist wrote: ↑05 Jul 2021, 19:19 What ratings version are we on now, and what is the prediction ratio?

Contendeh wrote: ↑10 Jul 2021, 13:37 I apologize if this has been addressed before:

Why is Povetkin still ranked when he has retired from boxing?

jujigatame wrote: ↑12 Jul 2021, 18:20 BTW I see Zurdo is #1 at LHW now. Perhaps another data point indicating that it is too easy to build big point totals without beating top opponents.

jujigatame wrote: ↑13 Jul 2021, 18:35 I mean that's better than nothing but it feels like it's just papering over an underlying problem.

SportsRatings wrote: ↑16 Jul 2021, 17:05

jujigatame wrote: ↑13 Jul 2021, 18:35 I mean that's better than nothing but it feels like it's just papering over an underlying problem.

So you're saying BoxRec needs to install a bidet rather than just using more Charmin?

JCS wrote: ↑17 Jul 2021, 14:52 Strange... I'd compare it to surgery vs. painkillers... but what do I know.

JCS wrote: ↑17 Jul 2021, 14:52 Strange... I'd compare it to surgery vs. painkillers... but what do I know.

jujigatame wrote: ↑18 Jul 2021, 11:34 Also why is Kavaliauskas ranked at 154? His last fight was at 147 and his next fight is at 147.