Diego J. Sanchez (born December 31, 1981) is an American mixed martial artist (MMA) with a background in wrestling and Gaidojutsu, system of submission wrestling developed by his longtime trainer Greg Jackson. Sanchez was the winner of the first season of The Ultimate Fighter reality series and currently fights as a welterweight with the Ultimate Fighting Championship (UFC). From 2007-2009, he lived in San Diego where he trained at The Arena MMA gym and the University of Jiu Jitsu with Saulo Ribeiro. In 2010, Sanchez moved back to New Mexico prior to his fight with John Hathaway. He now trains at Greg Jacksons MMA again.