Richard Thomas Clementi is a former American mixed martial artist. Clementi has fought for the Ultimate Fighting Championships, Bellator, K-1 Hero's DREAM, King of the Cage, and Titan FC.

The Ultimate Fighter 4 is the fourth season of the mixed martial arts reality television series The Ultimate Fighter. It premiered on August 17, 2006, immediately after the conclusion of UFC Fight Night 6. The finale was aired on November 11, 2006.