Across the UFC record, the split decision rate is highest under Jerin Valel at 14% (91 fights) and lowest under Osiris Maia at 4% (56 fights).
| Referee | Split-decision rate | Split decisions | Fights |
|---|---|---|---|
| Herb Dean | 9% | 114 | 1,223 |
| John McCarthy | 6% | 37 | 621 |
| Marc Goddard | 9% | 52 | 599 |
| Dan Miragliotta | 8% | 39 | 491 |
| Jason Herzog | 10% | 44 | 455 |
| Mark Smith | 10% | 44 | 437 |
| Chris Tognoni | 11% | 46 | 434 |
| Keith Peterson | 10% | 39 | 391 |
| Mario Yamasaki | 11% | 43 | 388 |
| Yves Lavigne | 11% | 30 | 264 |
| Steve Mazzagatti | 4% | 8 | 199 |
| Mike Beltran | 8% | 15 | 197 |
| Leon Roberts | 8% | 16 | 193 |
| Kerry Hatley | 10% | 16 | 163 |
| Josh Rosenthal | 12% | 14 | 120 |
| Kevin MacDonald | 10% | 11 | 109 |
| Jerin Valel | 14% | 13 | 91 |
| Steve Perceval | 13% | 12 | 90 |
| Jacob Montalvo | 8% | 6 | 78 |
| John Sharp | 9% | 7 | 76 |
| Rich Mitchell | 9% | 7 | 76 |
| Lukasz Bosacki | 8% | 6 | 73 |
| Kevin Mulhall | 8% | 5 | 60 |
| Osiris Maia | 4% | 2 | 56 |
| Daniel Movahedi | 9% | 5 | 55 |
| Blake Grice | 13% | 7 | 54 |
| Gary Copeland | 6% | 3 | 51 |
| Kevin Sataki | 8% | 4 | 48 |
| Neil Hall | 9% | 4 | 44 |
| Kim Winslow | 10% | 4 | 42 |