Poids Moyens Hommes
 | Nursulton Ruziboev | 5-1-0 UFC | #303 |  |
 | Ole Magnor | 2-2-0 REC | #4601 |  |
 | Oleg Nagorny | 0-1-0 REC | #7581 |  |
 | Oluwale Bamgbose | 1-4-0 UFC | #3651 |  |
 | Omar Amasha | #7787 |  | |
 | Ondrej Raska | 4-3-0 REC | #1504 |  |
 | Oscar Ravello | #8059 |  | |
 | Oskar Piechota | 2-3-0, 1NC UFC | #3802 |  |
 | Ourouzmag Magkeyev | 0-1-0 REC | #4409 |  |
 | Owain Williams | 0-1-0 REC | #7101 |  |
 | Ozzy Diaz | 1-2-0 UFC | #1438 | |
 | Paddy McCorry | 6-0-0 REC | #885 |  |
 | Pat Downey | 1-1-0 REC | #4610 | |
 | Patrik Jevicky | 0-1-0 REC | #7848 |  |
 | Patrik Kincl | 6-2-0 REC | #427 | |
 | Paul Herrera | 0-1-0 UFC | #4624 | |
 | Paul Kulze | 0-1-0 REC | #5956 | |
 | Paul Smith | 0-1-0 REC | #7172 |  |
 | Paulo Santos | 0-1-0 UFC | #5912 |  |
 | Pavel Salcak | 1-2-1 REC | #5472 | |