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FightIQ · UFC stats · UFC decision rate by referee

UFC decision rate by referee

38 UFC referees have worked 30 or more fights on the official record, 7,638 fights between them, and this page lists them by fights officiated, not by rate. Herb Dean has worked the most, 1,258; under Herb Dean, 43% of UFC fights went to the judges.

How often a UFC fight goes the distance and is scored by the judges.
Computed from 7,638 fights · 38 referees · updated 20 October 2026
Decision rate by referee38 bars, one per referee, in order of fights officiated, most first. Grey bars rest on fewer than 100 fights. The table below carries every value.Herb DeanHerb Dean: 43% (1,258 fights)43%John McCarthyJohn McCarthy: 33% (622 fights)33%Marc GoddardMarc Goddard: 49% (622 fights)49%Dan MiragliottaDan Miragliotta: 43% (498 fights)43%Jason HerzogJason Herzog: 49% (485 fights)49%Mark SmithMark Smith: 49% (460 fights)49%Chris TognoniChris Tognoni: 50% (459 fights)50%Keith PetersonKeith Peterson: 54% (405 fights)54%Mario YamasakiMario Yamasaki: 42% (388 fights)42%Yves LavigneYves Lavigne: 49% (264 fights)49%Mike BeltranMike Beltran: 49% (210 fights)49%Steve MazzagattiSteve Mazzagatti: 38% (199 fights)38%Leon RobertsLeon Roberts: 53% (193 fights)53%Kerry HatleyKerry Hatley: 49% (166 fights)49%Josh RosenthalJosh Rosenthal: 51% (120 fights)51%Kevin MacDonaldKevin MacDonald: 45% (109 fights)45%Jerin ValelJerin Valel: 57% (93 fights)57%Steve PercevalSteve Perceval: 49% (90 fights)49%Jacob MontalvoJacob Montalvo: 53% (79 fights)53%John SharpJohn Sharp: 50% (76 fights)50%Rich MitchellRich Mitchell: 53% (76 fights)53%Lukasz BosackiLukasz Bosacki: 52% (73 fights)52%Kevin MulhallKevin Mulhall: 52% (60 fights)52%Daniel MovahediDaniel Movahedi: 56% (59 fights)56%Blake GriceBlake Grice: 54% (57 fights)54%Osiris MaiaOsiris Maia: 39% (56 fights)39%Gary CopelandGary Copeland: 39% (51 fights)39%Kevin SatakiKevin Sataki: 48% (48 fights)48%Todd Ronald AndersonTodd Ronald Anderson: 53% (45 fights)53%Neil HallNeil Hall: 52% (44 fights)52%Kim WinslowKim Winslow: 48% (42 fights)48%Greg KleynjansGreg Kleynjans: 54% (39 fights)54%Larry LandlessLarry Landless: 35% (37 fights)35%Jim PerdiosJim Perdios: 50% (32 fights)50%Eduardo HerdyEduardo Herdy: 39% (31 fights)39%Fernando PortellaFernando Portella: 45% (31 fights)45%Vitor RibeiroVitor Ribeiro: 52% (31 fights)52%Grant WatermanGrant Waterman: 50% (30 fights)50%
Decision rate by referee · every value is in the table below, with the number of fights behind it.
RefereeDecision rateDecisionsFights
Herb Dean43%5461,258
John McCarthy33%208622
Marc Goddard49%307622
Dan Miragliotta43%216498
Jason Herzog49%236485
Mark Smith49%225460
Chris Tognoni50%229459
Keith Peterson54%217405
Mario Yamasaki42%162388
Yves Lavigne49%130264
Mike Beltran49%103210
Steve Mazzagatti38%76199
Leon Roberts53%103193
Kerry Hatley49%82166
Josh Rosenthal51%61120
Kevin MacDonald45%49109
Jerin Valelsmall sample57%5393
Steve Percevalsmall sample49%4490
Jacob Montalvosmall sample53%4279
John Sharpsmall sample50%3876
Rich Mitchellsmall sample53%4076
Lukasz Bosackismall sample52%3873
Kevin Mulhallsmall sample52%3160
Daniel Movahedismall sample56%3359
Blake Gricesmall sample54%3157
Osiris Maiasmall sample39%2256
Gary Copelandsmall sample39%2051
Kevin Satakismall sample48%2348
Todd Ronald Andersonsmall sample53%2445
Neil Hallsmall sample52%2344
Kim Winslowsmall sample48%2042
Greg Kleynjanssmall sample54%2139
Larry Landlesssmall sample35%1337
Jim Perdiossmall sample50%1632
Eduardo Herdysmall sample39%1231
Fernando Portellasmall sample45%1431
Vitor Ribeirosmall sample52%1631
Grant Watermansmall sample50%1530
What counts. A decision is any bout the official record scores — unanimous, split or majority. A fight is a UFC bout on the official record with a result. Draws, no-contests and overturned results are excluded from every count on this page; disqualifications and could-not-continues are counted as fights, which is why the knockout, submission and decision shares do not add up to 100%. How this table is cut. Every referee with at least 30 UFC bouts on the official record, listed by fights officiated, most first. This is a list, not a ranking. A referee does not choose the assignments, so these are differences in the fights each one was given as much as in how each one calls them. Small samples. Referees with fewer than 100 fights officiated are greyed and marked small sample. They are shown, not dropped. 1,135 fights are outside this table. They were officiated by a referee with fewer than 30 fights on the record, or carry no referee on the record. They are not missing from our record — they are on the year-by-year archive like every other bout; there is simply no row here for them to sit in. Check us. Every number here is recomputed from the official UFC statistical record on each build — nothing on this page is typed in by hand. Search every fight to filter the same record yourself, or start from the year-by-year archive.
Decision rate — cut another way
Other UFC stat answers