Diaz back in, but will face B.J. Penn instead!

Nick Diaz must have done something right in order to keep his name on the UFC 137 roster. UFC president Dana White announced on Thursday via Twitter, stating that Diaz will now take on B.J. Penn, who was left without an opponent after his original foe Carlos Condit received the call to replace Diaz to face Georges St. Pierre for the welterweight crown. Despite the twisting turn of events, the main headliner and its co-feature still feature all four guys originally slated to compete. Stylistically speaking, some say that the swap might even lead to more entertaining bouts. UFC 137 will take place on October 29th at Mandalay Bay Events Center in Las Vegas, NV.