It"s a historic grudge match in Las Vegas, as UFC bantamweight champion Dominick Cruz defends his crown against the only fighter to defeat him, Urijah Faber, in the first 135-pound title fight in Octagon history. Plus, mixed-martial arts legends Tito Ortiz and Wanderlai Silva look to keep their comeback hopes alive against Ryan Bader and Chris Leben, and welterweight contenders Carlos Condit and Dong Hyun Kim meet in a pivotal 170-pound matchup.