Joseph Duffy is an Irish retired mixed martial artist who competed in the lightweight division of the Ultimate Fighting Championship. A professional since 2008, he has formerly competed for Cage Warriors and was a contestant on The Ultimate Fighter: Team GSP vs. Team Koscheck. He is also a former professional boxer.
UFC 185: Pettis vs. Dos Anjos
UFC Fight Night 72: Bisping vs. Leites
UFC 195: Lawler vs. Condit
UFC Fight Night 90: Dos Anjos vs. Alvarez
UFC Fight Night 107: Manuwa vs. Anderson
UFC 217: Bisping vs. St-Pierre
UFC Fight Night 147: Till vs. Masvidal
UFC Fight Night 172: Figueiredo vs. Benavidez 2
UFC Fight Night 172: Figueiredo vs. Benavidez 2 - Prelims
Cage Warriors 39: The Uprising
