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FightIQ · UFC stats · UFC knockdowns per fight by referee

UFC knockdowns per fight 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, the average UFC fight produced 0.46 knockdowns.

How many knockdowns a UFC fight produces, both corners counted together.
Computed from 7,638 fights · 38 referees · updated 20 October 2026
Knockdowns per fight 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: 0.46 (1,258 fights)0.46John McCarthyJohn McCarthy: 0.40 (622 fights)0.40Marc GoddardMarc Goddard: 0.47 (622 fights)0.47Dan MiragliottaDan Miragliotta: 0.47 (498 fights)0.47Jason HerzogJason Herzog: 0.50 (485 fights)0.50Mark SmithMark Smith: 0.40 (460 fights)0.40Chris TognoniChris Tognoni: 0.36 (459 fights)0.36Keith PetersonKeith Peterson: 0.41 (405 fights)0.41Mario YamasakiMario Yamasaki: 0.43 (388 fights)0.43Yves LavigneYves Lavigne: 0.42 (264 fights)0.42Mike BeltranMike Beltran: 0.55 (210 fights)0.55Steve MazzagattiSteve Mazzagatti: 0.41 (199 fights)0.41Leon RobertsLeon Roberts: 0.46 (193 fights)0.46Kerry HatleyKerry Hatley: 0.39 (166 fights)0.39Josh RosenthalJosh Rosenthal: 0.52 (120 fights)0.52Kevin MacDonaldKevin MacDonald: 0.44 (109 fights)0.44Jerin ValelJerin Valel: 0.52 (93 fights)0.52Steve PercevalSteve Perceval: 0.46 (90 fights)0.46Jacob MontalvoJacob Montalvo: 0.49 (79 fights)0.49John SharpJohn Sharp: 0.38 (76 fights)0.38Rich MitchellRich Mitchell: 0.41 (76 fights)0.41Lukasz BosackiLukasz Bosacki: 0.32 (73 fights)0.32Kevin MulhallKevin Mulhall: 0.47 (60 fights)0.47Daniel MovahediDaniel Movahedi: 0.34 (59 fights)0.34Blake GriceBlake Grice: 0.51 (57 fights)0.51Osiris MaiaOsiris Maia: 0.39 (56 fights)0.39Gary CopelandGary Copeland: 0.45 (51 fights)0.45Kevin SatakiKevin Sataki: 0.40 (48 fights)0.40Todd Ronald AndersonTodd Ronald Anderson: 0.49 (45 fights)0.49Neil HallNeil Hall: 0.52 (44 fights)0.52Kim WinslowKim Winslow: 0.50 (42 fights)0.50Greg KleynjansGreg Kleynjans: 0.59 (39 fights)0.59Larry LandlessLarry Landless: 0.43 (37 fights)0.43Jim PerdiosJim Perdios: 0.41 (32 fights)0.41Eduardo HerdyEduardo Herdy: 0.42 (31 fights)0.42Fernando PortellaFernando Portella: 0.48 (31 fights)0.48Vitor RibeiroVitor Ribeiro: 0.45 (31 fights)0.45Grant WatermanGrant Waterman: 0.50 (30 fights)0.50
Knockdowns per fight by referee · every value is in the table below, with the number of fights behind it.
RefereeKnockdowns / fightKnockdownsFights
Herb Dean0.465751,258
John McCarthy0.40251622
Marc Goddard0.47292622
Dan Miragliotta0.47232498
Jason Herzog0.50241485
Mark Smith0.40186460
Chris Tognoni0.36164459
Keith Peterson0.41167405
Mario Yamasaki0.43168388
Yves Lavigne0.42112264
Mike Beltran0.55115210
Steve Mazzagatti0.4182199
Leon Roberts0.4689193
Kerry Hatley0.3965166
Josh Rosenthal0.5262120
Kevin MacDonald0.4448109
Jerin Valelsmall sample0.524893
Steve Percevalsmall sample0.464190
Jacob Montalvosmall sample0.493979
John Sharpsmall sample0.382976
Rich Mitchellsmall sample0.413176
Lukasz Bosackismall sample0.322373
Kevin Mulhallsmall sample0.472860
Daniel Movahedismall sample0.342059
Blake Gricesmall sample0.512957
Osiris Maiasmall sample0.392256
Gary Copelandsmall sample0.452351
Kevin Satakismall sample0.401948
Todd Ronald Andersonsmall sample0.492245
Neil Hallsmall sample0.522344
Kim Winslowsmall sample0.502142
Greg Kleynjanssmall sample0.592339
Larry Landlesssmall sample0.431637
Jim Perdiossmall sample0.411332
Eduardo Herdysmall sample0.421331
Fernando Portellasmall sample0.481531
Vitor Ribeirosmall sample0.451431
Grant Watermansmall sample0.501530
See also. This page is how often; these are the extremes on the same record: Most knockdowns in a single UFC fight
What counts. A knockdown is the official record’s own count, added across both corners. Bouts the record carries no knockdown column for are excluded rather than counted as zero. 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.
Knockdowns per fight — cut another way
Other UFC stat answers