UFC 137: Penn vs. Diaz

Name: UFC 137: Penn vs. Diaz
Released: 2011-10-29T00:00:00.000Z
Duration: 171 min
Rating: 6.8
Cast: Nick Diaz, B.J. Penn, Cheick Kongo, Matt Mitrione, Roy Nelson

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.