The Ultimate Fighting Championship's biggest event of 2012 comes to Las Vegas, and it's fitting that the UFC 148 main event is the long-awaited middleweight championship rematch between pound-for-pound king Anderson Silva and his heated rival, number one contender Chael Sonnen. Plus, UFC Hall of Famer Tito Ortiz makes his final Octagon appearance in a rubber match against Forrest Griffin, striking wizard Cung Le seeks his first UFC win against Canadian knockout artist Patrick Cote, and much, much more from a history-making event that shook up the mixed martial arts world.