UFC 137: Penn vs. Diaz
10/29/2011
Imdb: tt6717112
Tmdb: 76593
Popularity: 0.541
Vote: 6.8/10 (5)

UFC 137: Penn vs. Diaz was a mixed martial arts event held by the Ultimate Fighting Championship on October 29, 2011 at Mandalay Bay Events Center in Las Vegas, Nevada.