About Joseph Duffy

Joseph Duffy (born 18 February 1988) is an Irish retired mixed martial artist who competed in the lightweight division of the Ultimate Fighting Championship (UFC). 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. He holds a notable victory over the former UFC lightweight and featherweight double-champion, Conor McGregor.