| Fighter | Record | Last Bout |
|---|---|---|
| Abdul Rakhman Yakhyaev | 10-0-0 | 2026-10-24 |
| Abdul Razak Alhassan | 12-7-0 (1 NC) | 2025-01-11 |
| Aleksandar Rakic | 15-6-0 | 2026-08-01 |
| Alexandr Romanov | 18-3-0 | 2024-11-02 |
| Amanda Ribas | 13-7-0 | 2025-07-26 |
| Billy Ray Goff | 9-5-0 | 2026-08-08 |
| Brandon Royval | 18-9-0 | 2026-07-11 |
| Brendson Ribeiro | 17-11-0 (1 NC) | 2026-07-25 |
| Cam Rowston | 15-3-0 | 2026-10-24 |
| Charles Radtke | 12-5-0 | 2026-04-11 |
| Christian Rodriguez | 13-4-0 | 2026-06-20 |
| Cortavious Romious | 9-4-0 | 2025-04-05 |
| Damian Rzepecki | 10-1-0 | 2026-07-25 |
| Daniel Rodriguez | 20-6-0 | 2026-08-01 |
| Dominick Reyes | 16-5-0 | 2026-10-24 |
| Elise Reed | 8-6-0 | 2026-08-22 |
| Esteban Ribovics | 16-3-0 | 2026-10-03 |
| Gillian Robertson | 17-9-0 | 2026-08-15 |
| Gregory Rodrigues | 20-6-0 | 2026-08-22 |
| Imanol Rodriguez | 7-0-0 | 2026-10-03 |
| Jairzinho Rozenstruik | 15-6-0 | 2025-02-01 |
| Javier Reyes | 23-6-0 | 2026-06-27 |
| Jessie Rosas | 8-1-0 | 2026-09-12 |
| Karol Rosa | 19-8-0 | 2026-06-20 |
| Khalil Rountree Jr. | 15-7-0 (1 NC) | 2025-10-04 |
| Levi Rodrigues Jr. | 5-2-0 (1 NC) | 2026-08-29 |
| Lucas Rocha | 18-2-0 | 2025-10-11 |
| Luke Riley | 14-0-0 | 2026-07-11 |
| Marina Rodriguez | 17-6-2 | 2025-05-03 |
| Marwan Rahiki | 9-0-0 | 2026-09-12 |
| Mateusz Rebecki | 21-5-0 | 2026-08-01 |
| Mauricio Ruffy | 14-2-0 | 2026-09-19 |
| Mitch Ramirez | 8-4-0 | 2026-07-18 |
| Mitch Raposo | 11-3-0 | 2026-06-20 |
| Montse Rendon | 7-2-0 | 2026-03-14 |
| Montserrat Conejo Ruiz | 10-5-0 | 2025-11-01 |
| Nilson Rojas | 9-1-0 | 2026-08-29 |
| Nursulton Ruziboev | 37-10-2 (2 NC) | 2026-09-05 |
| Phil Rowe | 11-7-0 | 2026-02-21 |
| Piera Rodriguez | 12-2-0 | 2026-03-14 |
| RJ Harris | 6-0-0 | 2026-07-18 |
| Rafa Garcia | 19-4-0 | 2026-09-12 |
| Rafael Cerqueira | 11-4-0 | 2025-11-22 |
| Rafael Dos Anjos | 32-17-0 | 2026-10-03 |
| Rafael Estevam | 14-1-0 | 2026-04-04 |
| Rafael Fiziev | 14-5-0 | 2026-06-27 |
| Rafael Tobias | 14-3-0 | 2026-08-15 |
| Ramazan Temirov | 20-3-0 | 2026-10-24 |
| Ramiz Brahimaj | 13-7-0 | 2026-08-15 |
| Ramon Taveras | 10-4-0 | 2025-09-27 |