7. [autotag]Diego Sanchez[/autotag]
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Age: 38
Debut: The Ultimate Fighter 1 Finale on April 9, 2005
Number of fights: 31
Number of wins: 18
The original winner of “The Ultimate Fighter” reality series, Sanchez is currently the longest-tenured athlete on the UFC roster. His highs include winning “TUF,” fighting for a UFC title, and being just one of two UFC fighters to compete in four different weight classes.
6. [autotag]Georges St-Pierre[/autotag]
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Age: 38
Debut: UFC 46 on Jan. 31, 2004
Number of fights: 22
Number of wins: 20
St-Pierre stood atop the ladder for most UFC wins for several years while he was in a hiatus from competition. The former longtime welterweight champion was eventually surpassed on the list, but joined the 20-win UFC club when he beat Michael Bisping for middleweight gold at UFC 217 in November 2017.