Ultimate Fighting Championship (UFC) has its sights set on staging a major pay-per-view (PPV) event at the Mandalay Bay Events Center in Las Vegas, Nevada, on Oct. 29, 2011.
The promotion has already confirmed that a welterweight showdown between its champion, Georges St. Pierre, and Strikeforce 170-pound kingpin, Nick Diaz, will serve as the main event of the evening.
Additional UFC 137 fight card updates are now beginning to trickle out, including a possible co main event that features former welterweight and lightweight champion, B.J. Penn, challenging former World Extreme Cagefighting (WEC) superstar, Carlos Condit.
Two heavyweight clashes -- Mirko Filipovic vs. Roy Nelson and Matt Mitrione vs. Cheick Kongo -- are also under consideration.
Stay tuned to SB Nation MMA for additional UFC 137 fight card updates as they emerge. In the meantime, be sure to check out our complete UFC 137 event archive right here.