BoxRec Ratings Description - Revision history

Computerrank: /* Bout Star Ratings */

2025-08-07T20:46:57Z

Bout Star Ratings

Computerrank: /* All-time Ratings */

2025-04-29T19:38:01Z

All-time Ratings

← Older revision		Revision as of 19:38, 29 April 2025
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	(0.67 * average_5_top_defeated_opponents + 0.33 * career_top_rating) * division_factor * 10		(0.67 * average_5_top_defeated_opponents + 0.33 * career_top_rating) * division_factor * 10

	For lower weight divisions the points are converted with the ~~cube~~ of Heavyweight upper weight reference in relation to the upper weight ~~reference~~ of the Boxer's weight division.		For lower weight divisions the points are converted with the ratio of Heavyweight upper weight reference (240 pound) in relation to the upper weight limit of the Boxer's weight division.

	The best boxers can get a higher all-time rating, if		The best boxers can get a higher all-time rating, if

Computerrank: /* Current Ratings */

2025-04-02T09:02:41Z

Current Ratings

← Older revision		Revision as of 09:02, 2 April 2025
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	Winner above loser:		Winner above loser:
	* For the last 18 months a winner of a fight is kept above the loser.		* For the last 36 months a winner of a fight is kept above the loser.
	* This can be overcome by the loser having success in the future over a higher-rated opponent		* This can be overcome by the loser having success in the future over a higher-rated opponent

Ric at 01:06, 27 June 2024

2024-06-27T01:06:32Z

← Older revision		Revision as of 01:06, 27 June 2024
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	There admittedly are inaccuracies and anomalies, especially in the ''All Time'' ratings, mostly because of incomplete records in the BoxRec database. Although a boxer’s own record may be complete, his opponents’ records may not be complete. Pre-World War II boxers in particular are at somewhat of a disadvantage, vis-à-vis modern boxers. Their opponents’ records often are quite incomplete--because of the scarcity of source material or Editors' time--while the records of opponents of more current boxers may be quite complete. So, for example, while Mike Tyson's own record, and those of his opponents, may be complete--thereby earning Tyson a certain number of points and thus giving him a high ranking among the ''All Time'' Heavyweights--the records of Young Stribling’s opponents may be extremely lacking, thereby giving Stribling fewer points and a much-lower ''All Time'' rating. And it may appear to the casual BoxRec visitor that Stribling had fought many boxers making their professional debuts or having had only a handful of career bouts, when the truth is that not all of his opponents’ total career bouts have been entered into the database. (Too many of those old-time bouts are forever lost in history because they were not reported by a newspaper or similar source, or the source was later destroyed.) However, as BoxRec Editors continue to research older resources and enter “new” historical bouts into the database, or correct bouts/boxers previously entered, the rating of an old-time boxer like Stribling may gradually move up or down, even if his own record is considered complete, if bouts are added to his opponents’ records, or to their opponents' records, and so on.		There admittedly are inaccuracies and anomalies, especially in the ''All Time'' ratings, mostly because of incomplete records in the BoxRec database. Although a boxer’s own record may be complete, his opponents’ records may not be complete. Pre-World War II boxers in particular are at somewhat of a disadvantage, vis-à-vis modern boxers. Their opponents’ records often are quite incomplete--because of the scarcity of source material or Editors' time--while the records of opponents of more current boxers may be quite complete. So, for example, while Mike Tyson's own record, and those of his opponents, may be complete--thereby earning Tyson a certain number of points and thus giving him a high ranking among the ''All Time'' Heavyweights--the records of Young Stribling’s opponents may be extremely lacking, thereby giving Stribling fewer points and a much-lower ''All Time'' rating. And it may appear to the casual BoxRec visitor that Stribling had fought many boxers making their professional debuts or having had only a handful of career bouts, when the truth is that not all of his opponents’ total career bouts have been entered into the database. (Too many of those old-time bouts are forever lost in history because they were not reported by a newspaper or similar source, or the source was later destroyed.) However, as BoxRec Editors continue to research older resources and enter “new” historical bouts into the database, or correct bouts/boxers previously entered, the rating of an old-time boxer like Stribling may gradually move up or down, even if his own record is considered complete, if bouts are added to his opponents’ records, or to their opponents' records, and so on.

	Finally, because of the very few women presently boxing professionally, with some weight divisions having only a handful of active female boxers, a ~~woman~~ with an 0-1 record ~~will appear~~ “world ranked” by BoxRec~~. This is~~ simply an anomaly due to the few female entries in the database.		Finally, because of the very few women presently boxing professionally, with some weight divisions having only a handful of active female boxers, a boxer with an 0-1 record might be designated “world ranked” by BoxRec, but this may simply be an anomaly due to the few female entries in the database.

	== The BoxRec Ratings Algorithm ==		== The BoxRec Ratings Algorithm ==
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	=== Whole-History Rating Algorithm ===		=== Whole-History Rating Algorithm ===

	The ratings are ~~build~~ upon the Whole-History Rating (WHR) algorithm (Remi Coulom) described in the paper [https://www.remi-coulom.fr/WHR/WHR.pdf Whole-History Rating].		The ratings are built upon the Whole-History Rating (WHR) algorithm (Remi Coulom) described in the paper [https://www.remi-coulom.fr/WHR/WHR.pdf Whole-History Rating].

	Abstract. Whole-History Rating (WHR) is a new method to estimate		Abstract. Whole-History Rating (WHR) is a new method to estimate

Computerrank: /* The BoxRec Ratings Algorithm */

2024-05-15T12:31:30Z

The BoxRec Ratings Algorithm

← Older revision		Revision as of 12:31, 15 May 2024
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	* BoxRec seeds a boxer by 3 prior bouts with result 0.05 against		* BoxRec seeds a boxer by 3 prior bouts with result 0.05 against
	** an opponent with rating of 1 for connected boxers.		** an opponent with rating of 1 for connected boxers.
	** an opponent with rating of 1/6 for boxer with at least 1 win.		** an opponent with rating of 1/6 for boxers with at least 1 win.
			** an opponent with rating of 1/20 else.

			==== Tying the boxers at time of every bout to their base rating ====

			* BoxRec ties a boxer by 0.1 prior bouts per year passed since his last bout with result 0.05 against
			** an opponent with rating of 1 for connected boxers.
			** an opponent with rating of 1/6 for boxers with at least 1 win.
	** an opponent with rating of 1/20 else.		** an opponent with rating of 1/20 else.

Computerrank: /* BoxRec Ratings Special Additions for Professional Boxing */

2024-05-15T12:20:36Z

BoxRec Ratings Special Additions for Professional Boxing

← Older revision		Revision as of 12:20, 15 May 2024
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	=== BoxRec Ratings Special Additions for Professional Boxing ===		=== BoxRec Ratings Special Additions for Professional Boxing ===

	BoxRec is obliged to provide ratings with the best winner prediction rate available. Currently the yielded ratio is 86.38 percent for professional boxing.		BoxRec is obliged to provide ratings with the best winner prediction rate available. Currently the yielded ratio is 86.57 percent for professional boxing.

	Boxing requires some special additions to the generalised WHR ratings and the additional parameter values are found by maximising the winner prediction ratio.		Boxing requires some special additions to the generalised WHR ratings and the additional parameter values are found by maximising the winner prediction ratio.

Computerrank: /* Bout Star Ratings */

2024-05-03T07:48:25Z

Bout Star Ratings

Computerrank: /* BoxRec Ratings Special Additions for Professional Boxing */

2024-03-29T11:57:25Z

BoxRec Ratings Special Additions for Professional Boxing

← Older revision		Revision as of 11:57, 29 March 2024
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	=== BoxRec Ratings Special Additions for Professional Boxing ===		=== BoxRec Ratings Special Additions for Professional Boxing ===

	BoxRec is obliged to provide ratings with the best winner prediction rate available. Currently the yielded ratio is 85.67 percent for professional boxing.		BoxRec is obliged to provide ratings with the best winner prediction rate available. Currently the yielded ratio is 86.38 percent for professional boxing.

	Boxing requires some special additions to the generalised WHR ratings and the additional parameter values are found by maximising the winner prediction ratio.		Boxing requires some special additions to the generalised WHR ratings and the additional parameter values are found by maximising the winner prediction ratio.

Computerrank: /* Bout Star Ratings */

2024-03-28T11:58:10Z

Bout Star Ratings

← Older revision		Revision as of 11:58, 28 March 2024
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	* 0 stars = one opponents has not even 0.017 rating points at least = not rated boxers		* 0 stars = one opponents has not even 0.017 rating points at least = not rated boxers

	~~'F' => array (~~
	~~'10' => 54.4773,~~
	~~'9' => 33.129,~~
	~~'8' => 22.6682,~~
	~~'7' => 14.2987,~~
	~~'6' => 8.90067,~~
	~~'5' => 6.16183,~~
	~~'4' => 3.85908,~~
	~~'3' => 2.38906,~~
	~~'2' => 0.970245,~~
	~~'1' => 0.150354~~
	Women		Women

Computerrank: /* Bout Star Ratings */

2024-03-28T11:57:50Z

Bout Star Ratings

← Older revision		Revision as of 11:57, 28 March 2024
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	Men		Men

	* 5 stars = both opponents have 10.0 rating points at least ~ best 100 boxers		* 5 stars = both opponents have 20.1 rating points at least ~ best 100 boxers
	* 4 stars = both opponents have 4.12 rating points at least ~ best 300 boxers		* 4 stars = both opponents have 9.12 rating points at least ~ best 300 boxers
	* 3 stars = both opponents have 1.47 rating points at least ~ best 900 boxers		* 3 stars = both opponents have 2.94 rating points at least ~ best 900 boxers
	* 2 stars = both opponents have 0.~~359~~ rating points at least ~ best 2700 boxers		* 2 stars = both opponents have 0.724 rating points at least ~ best 2700 boxers
	* 1 stars = both opponents have 0.~~018~~ rating points at least = best 8100 boxers		* 1 stars = both opponents have 0.153 rating points at least = best 8100 boxers
	* 0 stars = one opponents has not even 0.~~018~~ rating points at least = not rated boxers		* 0 stars = one opponents has not even 0.017 rating points at least = not rated boxers

			'F' => array (
			'10' => 54.4773,
			'9' => 33.129,
			'8' => 22.6682,
			'7' => 14.2987,
			'6' => 8.90067,
			'5' => 6.16183,
			'4' => 3.85908,
			'3' => 2.38906,
			'2' => 0.970245,
			'1' => 0.150354
	Women		Women

	* 5 stars = both opponents have 20.0 rating points at least ~ best 10 boxers		* 5 stars = both opponents have 54.4 rating points at least ~ best 10 boxers
	* 4 stars = both opponents have 8.04 rating points at least ~ best 30 boxers		* 4 stars = both opponents have 22.6 rating points at least ~ best 30 boxers
	* 3 stars = both opponents have 3.34 rating points at least ~ best 90 boxers		* 3 stars = both opponents have 8.90 rating points at least ~ best 90 boxers
	* 2 stars = both opponents have 0.~~872~~ rating points at least ~ best 270 boxers		* 2 stars = both opponents have 3.85 rating points at least ~ best 270 boxers
	* 1 stars = both opponents have 0.~~023~~ rating points at least = best 810 boxer		* 1 stars = both opponents have 0.970 rating points at least = best 810 boxer
	* 0 stars = one opponents has not even 0.~~023~~ rating points at least = not rated boxers		* 0 stars = one opponents has not even 0.150 rating points at least = not rated boxers

	== Links ==		== Links ==

← Older revision		Revision as of 20:46, 7 August 2025
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	Men		Men

	* 5 stars = both opponents have 28.0 rating points at least ~ best 100 boxers		* 5 stars = both opponents have 9.45 rating points at least ~ best 100 boxers
	* 4 stars = both opponents have 15.7 rating points at least ~ best 300 boxers		* 4 stars = both opponents have 5.0 rating points at least ~ best 300 boxers
	* 3 stars = both opponents have 6.95 rating points at least ~ best 900 boxers		* 3 stars = both opponents have 2.36 rating points at least ~ best 900 boxers
	* 2 stars = both opponents have 2.14 rating points at least ~ best 2700 boxers		* 2 stars = both opponents have 0.893 rating points at least ~ best 2700 boxers
	* 1 stars = both opponents have 0.~~262~~ rating points at least = best 8100 boxers		* 1 stars = both opponents have 0.159 rating points at least = best 8100 boxers
	* 0 stars = one opponents has not even 0.~~011~~ rating points at least = not rated boxers		* 0 stars = one opponents has not even 0.015 rating points at least = not rated boxers

	Women		Women

	* 5 stars = both opponents have 26.6 rating points at least ~ best 10 boxers		* 5 stars = both opponents have 13.6 rating points at least ~ best 10 boxers
	* 4 stars = both opponents have 15.1 rating points at least ~ best 30 boxers		* 4 stars = both opponents have 7.36 rating points at least ~ best 30 boxers
	* 3 stars = both opponents have 7.44 rating points at least ~ best 90 boxers		* 3 stars = both opponents have 3.41 rating points at least ~ best 90 boxers
	* 2 stars = both opponents have 3.16 rating points at least ~ best 270 boxers		* 2 stars = both opponents have 1.61 rating points at least ~ best 270 boxers
	* 1 stars = both opponents have 0.~~402~~ rating points at least = best 810 boxer		* 1 stars = both opponents have 0.303 rating points at least = best 810 boxer
	* 0 stars = one opponents has not even 0.~~001~~ rating points at least = not rated boxers		* 0 stars = one opponents has not even 0.013 rating points at least = not rated boxers

	== Links ==		== Links ==

← Older revision		Revision as of 07:48, 3 May 2024
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	Men		Men

	* 5 stars = both opponents have 20.1 rating points at least ~ best 100 boxers		* 5 stars = both opponents have 28.0 rating points at least ~ best 100 boxers
	* 4 stars = both opponents have 9.12 rating points at least ~ best 300 boxers		* 4 stars = both opponents have 15.7 rating points at least ~ best 300 boxers
	* 3 stars = both opponents have 2.94 rating points at least ~ best 900 boxers		* 3 stars = both opponents have 6.95 rating points at least ~ best 900 boxers
	* 2 stars = both opponents have 0.~~724~~ rating points at least ~ best 2700 boxers		* 2 stars = both opponents have 2.14 rating points at least ~ best 2700 boxers
	* 1 stars = both opponents have 0.~~153~~ rating points at least = best 8100 boxers		* 1 stars = both opponents have 0.262 rating points at least = best 8100 boxers
	* 0 stars = one opponents has not even 0.~~017~~ rating points at least = not rated boxers		* 0 stars = one opponents has not even 0.011 rating points at least = not rated boxers

	Women		Women

	* 5 stars = both opponents have 54.4 rating points at least ~ best 10 boxers		* 5 stars = both opponents have 26.6 rating points at least ~ best 10 boxers
	* 4 stars = both opponents have 22.6 rating points at least ~ best 30 boxers		* 4 stars = both opponents have 15.1 rating points at least ~ best 30 boxers
	* 3 stars = both opponents have 8.90 rating points at least ~ best 90 boxers		* 3 stars = both opponents have 7.44 rating points at least ~ best 90 boxers
	* 2 stars = both opponents have 3.85 rating points at least ~ best 270 boxers		* 2 stars = both opponents have 3.16 rating points at least ~ best 270 boxers
	* 1 stars = both opponents have 0.~~970~~ rating points at least = best 810 boxer		* 1 stars = both opponents have 0.402 rating points at least = best 810 boxer
	* 0 stars = one opponents has not even 0.~~150~~ rating points at least = not rated boxers		* 0 stars = one opponents has not even 0.001 rating points at least = not rated boxers

	== Links ==		== Links ==