B.J. Penn

Jay Dee "B.J." Penn was born December 12, 1978 in Hilo Hawaii and is a Brazilian Jiu Jitsu practitioner as well as an American mixed martial arts fighter. Penn is the first American born champion of the World Brazilian Jiu-Jitsu Championship (Mundial) in the black belt category (2000). Penn is also a former UFC Welterweight Champion and is a prominent coach on The Ultimate Fighter 5 reality show. The nickname B.J. is sort for Baby Jay because he is the youngest male siblings, all of which are named Jay Dee Penn.