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FightIQ · UFC stats · UFC first-round finish rate by referee

UFC first-round finish rate by referee

Across the UFC record, the first-round finish rate is highest under John McCarthy at 44% (621 fights) and lowest under Jerin Valel at 19% (91 fights).

How often a UFC fight is over inside one round.
Computed from 7,178 fights · 30 referees · updated 20 September 2026
First-round finish rate by referee30 bars. Highest: John McCarthy at 44% from 621 fights. The table below carries every value.Herb DeanHerb Dean: 29% (1,223 fights)29%John McCarthyJohn McCarthy: 44% (621 fights)44%Marc GoddardMarc Goddard: 26% (599 fights)26%Dan MiragliottaDan Miragliotta: 30% (491 fights)30%Jason HerzogJason Herzog: 25% (455 fights)25%Mark SmithMark Smith: 22% (437 fights)22%Chris TognoniChris Tognoni: 23% (434 fights)23%Keith PetersonKeith Peterson: 19% (391 fights)19%Mario YamasakiMario Yamasaki: 36% (388 fights)36%Yves LavigneYves Lavigne: 30% (264 fights)30%Steve MazzagattiSteve Mazzagatti: 33% (199 fights)33%Mike BeltranMike Beltran: 29% (197 fights)29%Leon RobertsLeon Roberts: 27% (193 fights)27%Kerry HatleyKerry Hatley: 26% (163 fights)26%Josh RosenthalJosh Rosenthal: 25% (120 fights)25%Kevin MacDonaldKevin MacDonald: 28% (109 fights)28%Jerin ValelJerin Valel: 19% (91 fights)19%Steve PercevalSteve Perceval: 31% (90 fights)31%Jacob MontalvoJacob Montalvo: 21% (78 fights)21%John SharpJohn Sharp: 28% (76 fights)28%Rich MitchellRich Mitchell: 26% (76 fights)26%Lukasz BosackiLukasz Bosacki: 26% (73 fights)26%Kevin MulhallKevin Mulhall: 27% (60 fights)27%Osiris MaiaOsiris Maia: 32% (56 fights)32%Daniel MovahediDaniel Movahedi: 22% (55 fights)22%Blake GriceBlake Grice: 20% (54 fights)20%Gary CopelandGary Copeland: 31% (51 fights)31%Kevin SatakiKevin Sataki: 21% (48 fights)21%Neil HallNeil Hall: 25% (44 fights)25%Kim WinslowKim Winslow: 19% (42 fights)19%
First-round finish rate by referee · every value is in the table below, with the number of fights behind it.
RefereeR1 finish rateFirst-round finishesFights
Herb Dean29%3551,223
John McCarthy44%272621
Marc Goddard26%153599
Dan Miragliotta30%149491
Jason Herzog25%113455
Mark Smith22%98437
Chris Tognoni23%101434
Keith Peterson19%74391
Mario Yamasaki36%139388
Yves Lavigne30%78264
Steve Mazzagatti33%65199
Mike Beltran29%57197
Leon Roberts27%52193
Kerry Hatley26%42163
Josh Rosenthal25%30120
Kevin MacDonald28%30109
Jerin Valel19%1791
Steve Perceval31%2890
Jacob Montalvo21%1678
John Sharp28%2176
Rich Mitchell26%2076
Lukasz Bosacki26%1973
Kevin Mulhall27%1660
Osiris Maia32%1856
Daniel Movahedi22%1255
Blake Grice20%1154
Gary Copeland31%1651
Kevin Sataki21%1048
Neil Hall25%1144
Kim Winslow19%842
What counts. A first-round finish is a knockout or submission the official record places in round one. 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. The 30 referees with the most UFC bouts on the official record. 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. 1,545 fights are outside this table. They were officiated by somebody outside those 30, 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.
First-round finish rate — cut another way
Other UFC stat answers