Jay Dee "B.J." Penn III is an American professional mixed martial artist and Brazilian Jiu-Jitsu practitioner. Penn competed in the Ultimate Fighting Championship (UFC) and in K-1. Penn was the first American Gold medalist of the World Jiu-Jitsu Championship. In mixed martial arts, Penn has competed in the Featherweight, Lightweight, Welterweight, and Middleweight divisions. A former UFC Lightweight Champion and UFC Welterweight Champion, he is the second of seven fighters in UFC history to win titles in multiple weight classes. Penn fought to a draw against Caol Uno in the UFC 41 Lightweight Tournament. Through his tenures as champion, Penn unofficially unified the UFC Lightweight Championship and broke the all-time lightweight title defense record. In 2015, Penn was made the inaugural inductee into the Modern- Era Wing of the UFC Hall of Fame.
