Tous les combattants
 | Robert Bryczek | 1-2-0 UFC | #1363 |  |
 | Robert Constantin | 0-1-0 REC | #5282 |  |
 | Robert Drysdale | #7298 |  | |
 | Robert Emerson | 3-3-0, 1NC UFC | #2944 | |
 | Robert Hale | 0-1-0 REC | #7105 | |
 | Robert Lucarelli | 0-1-0 UFC | #5564 | |
 | Robert Maciejowski | 0-1-0 REC | #7363 | |
 | Robert Pukac | 6-8-0 REC | #712 |  |
 | Robert Ruchala | 0-2-0 UFC | #1446 | |
 | Robert Valentin | 1-3-0 UFC | #618 |  |
 | Robert Valiev | 0-2-0 REC | #5478 |  |
 | Robert Varricchio | 0-1-0 REC | #6076 | |
 | Robert Watley | 2-3-0 REC | #2010 | |
 | Robert Whittaker | 18-7-0 UFC | #28 |  |
 | Roberta Paim Samad | 1-0-0 REC | #7017 |  |
 | Roberto de Souza | 4-3-0 REC | #1533 | |
 | Roberto Hernandez | 4-2-0 REC | #3372 | |
 | Roberto Romero | 0-2-0 UFC | #2942 |  |
 | Roberto Sanchez | 1-2-0 UFC | #4430 | |
 | Roberto Traven | 1-1-0 UFC | #4630 | |
 | Robin Fosum | 2-0-1 REC | #5375 |  |
 | Robin Frank | 0-1-0 REC | #5206 |  |
 | Robin Roos | 0-3-0 REC | #3769 |  |
 | Robson Junior | 1-0-0 REC | #6446 | |
 | Rocky Lee | 0-1-0 UFC | #4100 |  |