It was so close...but Chael Sonnen failed to vanquish middleweight legend Anderson Silva in 2010. He's back to try again, though, as Sonnen and Silva square off in a hotly anticipated rematch to determine the UFC Middleweight Championship. Also on this fight card, light heavyweights Tito Ortiz and Forrest Griffin appear for their third match; welterweights Demian Maia and Dong Hyun Kim meet; and more. 5 hrs. on two discs. Widescreen (Enhanced); Soundtrack: English Dolby Digital stereo; behind-the-scenes footage; more.