![UFC 137: Penn vs. Diaz](https://image.tmdb.org/t/p/w300/m6Uw8y55wCl7lqTRljXItRVQOo0.jpg)
UFC 137: Penn vs. Diaz
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.
- Είδος:
- Στούντιο: Zuffa
- Λέξη-κλειδί:
- Εκμαγείο: Nick Diaz, B.J. Penn, Cheick Kongo, Matt Mitrione, Roy Nelson, Mirko Filipović