Michael Keith Chiesa (/ˌkiˈɛsə/; born December 7, 1987) is an American professional mixed martial artist, and sports analyst who currently competes in the welterweight division in the Ultimate Fighting Championship (UFC). A professional MMA competitor since 2008, Chiesa was the winner of FX's inaugural The Ultimate Fighter: Live. As of November 21, 2022, he is #13 in the UFC welterweight rankings.