Poids Moyens Hommes
 | Nursulton Ruziboev | 5-1-0 UFC | #279 |  |
 | Ole Magnor | 2-2-0 REC | #4583 |  |
 | Oleg Nagorny | 0-1-0 REC | #7524 |  |
 | Oluwale Bamgbose | 1-4-0 UFC | #3628 |  |
 | Omar Amasha | #7789 |  | |
 | Ondrej Raska | 4-3-0 REC | #1473 |  |
 | Oscar Ravello | #8057 |  | |
 | Oskar Piechota | 2-3-0, 1NC UFC | #3799 |  |
 | Ourouzmag Magkeyev | 0-1-0 REC | #4413 |  |
 | Owain Williams | 0-1-0 REC | #7104 |  |
 | Ozzy Diaz | 1-2-0 UFC | #1442 | |
 | Paddy McCorry | 6-0-0 REC | #831 |  |
 | Pat Downey | 1-1-0 REC | #4647 | |
 | Patrik Jevicky | 0-1-0 REC | #7820 |  |
 | Patrik Kincl | 6-2-0 REC | #363 | |
 | Paul Herrera | 0-1-0 UFC | #4629 | |
 | Paul Kulze | 0-1-0 REC | #6121 | |
 | Paul Smith | 0-1-0 REC | #7127 |  |
 | Paulo Santos | 0-1-0 UFC | #5908 |  |
 | Pavel Salcak | 1-2-1 REC | #5503 | |