Combattants Etats-Unis
| 1876 |  | Orion Cosce | 1-2-0 UFC | #3860 |  |
| 1877 |  | Orlando Sanders | 0-1-0 REC | #7177 | |
| 1878 |  | Oscar Jurado Sanchez | 1-0-0 REC | #679 | |
| 1879 |  | Oseyiomon Oiyemhonlan | 1-2-0 REC | #4430 | |
| 1880 |  | Ovince St. Preux | 15-13-0 UFC | #268 | |
| 1881 |  | Ozzy Diaz | 1-1-0 UFC | #1622 | |
| 1882 |  | Pablo Garza | 3-3-0 UFC | #3000 | |
| 1883 |  | Paige VanZant | 5-4-0 UFC | #1617 | |
| 1884 |  | Pam Sorenson | 0-2-0 REC | #5183 | |
| 1885 |  | Parker Porter | 4-4-0 UFC | #2336 | |
| 1886 |  | Pat Audinwood | 0-2-0 UFC | #5343 | |
| 1887 |  | Pat Barry | 5-7-0 UFC | #1973 | |
| 1888 |  | Pat Downey | 1-1-0 REC | #4283 | |
| 1889 |  | Pat Healy | 0-5-0, 1NC UFC | #2848 | |
| 1890 |  | Pat Miletich | 8-2-0 UFC | #327 | |
| 1891 |  | Pat Sabatini | 8-2-0 UFC | #399 | |
| 1892 |  | Pat Schilling | 0-2-0 UFC | #4091 | |
| 1893 |  | Patchy Mix | 0-2-0 UFC | #1252 | |
| 1894 |  | Patrick Brady | 0-1-0 REC | #7140 | |
| 1895 |  | Patrick Cornett | 0-1-0 REC | #6729 | |
| 1896 |  | Patrick Cummins | 6-7-0 UFC | #1690 | |
| 1897 |  | Patrick Smith | 4-2-0 UFC | #2449 | |
| 1898 |  | Patrick Walsh | 1-1-0 UFC | #4947 | |
| 1899 |  | Patrick Williams | 1-3-0 UFC | #3524 | |
| 1900 |  | Patrik White | 0-1-0 REC | #7369 | |