Most losses: since 2001
Most UFC losses.
2,450 fighters.
| # | Fighter | Total |
|---|---|---|
| =1987 | Rodolfo Rubio Perez | 1 |
| =1987 | Rodrigo Ruas | 1 |
| =1987 | Rodrigo Sezinando | 1 |
| =1987 | Roger Gracie | 1 |
| =1987 | Roger Zapata | 1 |
| =1987 | Rolles Gracie | 1 |
| =1987 | Roman Bogatov | 1 |
| =1987 | Roman Mitichyan | 1 |
| =1987 | Romie Aram | 1 |
| =1987 | Ronald Jhun | 1 |
| =1987 | Ronaldo Rodriguez | 1 |
| =1987 | Ronnie Lawrence | 1 |
| =1987 | Royce Gracie | 1 |
| =1987 | Royston Wee | 1 |
| =1987 | Ryan Hall | 1 |
| =1987 | Ryan Kuse | 1 |
| =1987 | Ryan Madigan | 1 |
| =1987 | Ryan McGillivray | 1 |
| =1987 | Ryan Roberts | 1 |
| =1987 | Sai Wang | 1 |
| =1987 | Saidyokub Kakhramonov | 1 |
| =1987 | Sako Chivitchian | 1 |
| =1987 | Sangwook Kim | 1 |
| =1987 | Santiago Luna | 1 |
| =1987 | Scott Junk | 1 |
| =1987 | Sean Alvarez | 1 |
| =1987 | Sean Gannon | 1 |
| =1987 | Sebastian Szalay | 1 |
| =1987 | Semmy Schilt | 1 |
| =1987 | Seokhyeon Ko | 1 |
| =1987 | Sergey Khandozhko | 1 |
| =1987 | Serhiy Sidey | 1 |
| =1987 | SeungGuk Choi | 1 |
| =1987 | Shamil Gamzatov | 1 |
| =1987 | Shane Primm | 1 |
| =1987 | Shara Magomedov | 1 |
| =1987 | Sherman Pendergarst | 1 |
| =1987 | Shunichi Shimizu | 1 |
| =1987 | Sirwan Kakai | 1 |
| =1987 | Sofia Montenegro | 1 |
| =1987 | Solomon Hutcherson | 1 |
| =1987 | Stephanie Luciano | 1 |
| =1987 | Stephen Bass | 1 |
| =1987 | Steve Bosse | 1 |
| =1987 | Steve Byrnes | 1 |
| =1987 | Steve Vigneault | 1 |
| =1987 | Steven Asplund | 1 |
| =1987 | Steven Koslow | 1 |
| =1987 | Steven Nguyen | 1 |
| =1987 | Stevie Lynch | 1 |