Data quality
What this dashboard knows it does not know. Nothing here is estimated or
filled in — a missing value stays missing.
| Completed fights | 8974 |
| Confirmed by a second source | 8761 |
| Held out: two fighters share a name, so the record is a blend | 2 |
| Active fighters with no country on record | 524 |
| Active fighters with no date of birth, so no age for the model | 12 |
| Scheduled bouts where one age is unknown — the prediction is tagged limited data | 4 |
Provisional ratings
- 524 active fighters have no country recorded yet, so the home-fighter term in the judging model is measured on a partial sample
- 26 fighters have UFC bouts but no height, reach or date of birth, because the source files disagree about their name: Guilherme Pat (3), Marwan Rahiki (3), Felix Lee Mitchell (3), Tyrell Fortune (2), Denzel Freeman (2), Jack Nilson (2) …. Their physical attributes are shown as unknown rather than guessed, and age and reach are not available to the model for them.
- 2 bouts involve two fighters who share a name on UFCStats and are excluded from ratings until they are told apart
Two fighters, one name
UFCStats gives 7 display names to two different fighter ids each, and its results file keys bouts by name alone. A bout that cannot be attributed earns no rating credit — a guessed attribution is worse than a missing one.
Still unattributed
- Joey Gomez — 2 bout(s) held out of the ratings.
Id 0778f94eb5d588a5 is 135 lbs, 5'10", 73" reach, born 1986-07-21, nickname 'KO King'; id 3a28e1e641366308 is 155 lbs, 5'10", 71" reach, born 1989-08-29, no nickname. Both bouts (2016-01-17 vs Rob Font, 2016-09-17 vs Jose Quinonez) are bantamweight, which matches 0778f94eb5d588a5's 135 lbs exactly.
Why that is not enough: One field points, and nothing excludes the alternative. The weight gap is 20 lbs — a real cut, but fighters do move between 135 and 155 across a career, which is not true of the 60 and 70 lb gaps that settle Bruno Silva and Michael McDonald. The two are the same height, their ages in 2016 (29 and 26) are both ordinary, reach differs by two inches, and neither is on Wikipedia's current-roster page — correctly, since the career ends in 2016 — so there is no second source to break the tie. Two bouts stay out of the ratings rather than be attributed on one field.
Attributed on evidence
- Anthony Romero → 4419acb81e6f0ea4
The single bout (2026-10-03, Featherweight, vs Marcus McGhee) is the 145 lb fighter. Id 4419acb81e6f0ea4 is 145 lbs, 5'5", 66" reach, Southpaw, nickname 'The Bully'; id 6f81399074fcdbba is 155 lbs, 5'11", 70" reach, Orthodox, born 1997-02-25. Weight alone would only be suggestive — a lightweight dropping to featherweight is routine — but Wikipedia's roster names the bout itself: 'Anthony Romero', Featherweights (145 lb), age 30, 5 ft 5 in, nickname 'The Bully', most recent result 'Loss – UFC 332 (Salt Lake City) – Marcus McGhee'. Nickname, height (5'5" against 5'5"), division and the named opponent of this exact bout all point at 4419acb81e6f0ea4, and 5'11" is three inches off the roster's height for him. - Bruno Silva → 12ebd7d157e91701, 294aa73dbf37d281
Two separate careers under one name, and the only one of the seven that genuinely splits. UFCStats id 294aa73dbf37d281 is 125 lbs, 5'4", 65" reach, born 1990-03-16, nickname 'Bulldog'; id 12ebd7d157e91701 is 185 lbs, 6'0", 74" reach, born 1989-07-13, nickname 'Blindado'. Sixty pounds of division and eight inches of height apart: a 5'4" fighter does not make middleweight and a 6'0" fighter does not make flyweight. The 23 bouts divide cleanly — 11 flyweight and 11 middleweight — and each group's weight class matches one id's tale-of-the-tape weight exactly. Wikipedia's current-roster page confirms the flyweight independently: 'Bruno Gustavo da Silva', Flyweights (125 lb), age 36, 5 ft 4 in, nickname 'Bulldog' (/wiki/Bruno_Gustavo_da_Silva) — nickname, height, division and age all agree with 294aa73dbf37d281. The middleweight is not on the current roster, so the 11 middleweight bouts are his by exclusion, which the 60 lb gap makes airtight. The one bantamweight bout (2019-10-05 vs Khalid Taha) is Bulldog's: 135 lbs is 10 lbs from his 125 and 50 from Blindado's 185, it is his UFC debut immediately before his flyweight run begins on 2020-03-14, and Blindado's first bout here is 2021-06-19, twenty months later. - Jean Silva → 52ef95b5860fb28c
All 8 bouts are the current featherweight. Id 52ef95b5860fb28c is 145 lbs, 5'7", 69" reach, born 1996-12-27, nickname 'Lord'; id 9211aae062b799d6 is 160 lbs, 5'6", no reach, born 1977-10-08, nickname 'White Bear'. Seven of the eight bouts are featherweight, matching 145 lbs exactly (the eighth is a 2024-07-13 lightweight bout against Drew Dober, an ordinary one-division step up). '160 lbs' is not a UFC division at all, and the 1977 fighter would have been 46 at the 2024-01-13 bout and 48 at the 2026-09-12 one — older than anyone who has competed in the division. Wikipedia's roster agrees on four fields: 'Jean Silva', Featherweights (145 lb), age 29, 5 ft 7 in, nickname 'Lord' (/wiki/Jean_Silva), with the most recent bout given as a win over Jose Miguel Delgado — the 2026-09-12 bout in this set. - Michael Mcdonald → d0314416a7f26527
All 9 bouts are the bantamweight. Id d0314416a7f26527 is 135 lbs, 5'9", 70" reach, born 1991-01-15, nickname 'Mayday'; id d52ef694108f8235 is 205 lbs, 5'11", no reach, born 1965-02-06, nickname 'The Black Sniper'. Every one of the 9 bouts is a bantamweight bout, matching 135 lbs exactly against a 205 lb light heavyweight — a 70 lb gap. Age settles it a second time: the 2013-02-16 bout is an interim bantamweight title fight against Renan Barao, at which d0314416a7f26527 was 22; the 1965 fighter would have been 48, and 51 at the last bout in 2016. Neither id is on Wikipedia's current roster, which is correct — the career ends in 2016. - Mike Davis → fb3e61720be4690c
All 8 bouts are one continuous lightweight career, 2019 to 2026, with no division conflict and no overlap. Id fb3e61720be4690c is 155 lbs, 6'0", 72" reach, born 1992-10-07, nickname 'Beast Boy' — 155 lbs matches every one of the 8 bouts, and the date of birth puts him at 26 at the 2019-04-27 debut. Id c8661e204c66f325 has **no attributes at all**: no height, no weight, no reach, no stance, no date of birth, no nickname, and no bouts of its own, so there is nothing that could make it the better fit for a career that matches the other id on weight and age. Wikipedia confirms on four fields: 'Mike Davis', Lightweights (155 lb), age 34, 6 ft 0 in, nickname 'Beast Boy' (/wiki/Mike_Davis_(fighter)), most recent bout a loss to Nurullo Aliev — the 2026-07-25 bout in this set. Why UFCStats carries a second, empty 'Mike Davis' id is unexplained; it is left alone rather than merged, because an empty record is not evidence of anything, including of being a duplicate. - Victor Valenzuela → 078695e385ec2f57
The single bout (2026-04-25, Welterweight, vs Max Griffin) is the 170 lb fighter. Id 078695e385ec2f57 is 170 lbs, no height recorded, born 1994-02-09, nickname 'Psicosis'; id de277a4abcfeea46 is 155 lbs, 5'10", no date of birth, nickname 'Joe Boxer'. Wikipedia's roster names this bout too: 'Victor Valenzuela', Welterweights (170 lb), age 32, 5 ft 9 in, nickname 'Psicosis', most recent result 'Win – UFC Fight Night 274 (Las Vegas) – Max Griffin'. Nickname, division (170 against 170), age (born 1994-02-09 is 32 as of 2026-11) and the named opponent of this exact bout all point at 078695e385ec2f57. The one disagreement is height — the roster says 5 ft 9 in and UFCStats records none for this id, while the other id is 5'10" — which is a missing field on the matched id, not a conflict with it.