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Chris Weidman reacts after knocking down Anderson Silva during the second round of their UFC 162 mixed martial arts middleweight championship bout at the MGM Grand Garden Arena on Saturday, July 6, 2013, in Las Vegas. (AP Photo/David Becker)

Chris Weidman knocks out Anderson Silva

While Anderson Silva was showboating, Chris Weidman caught him clean with a left hook and finished him off on the ground for a second-round KO at UFC 162 to claim the middleweight championship.