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Wanderlei Silva has refused to take a pre-fight drug test from the NSAC and he has been pulled from UFC 175, replacing him against Chael Sonnen in a light heavyweight bout will be Vitor Belfort. Sonnen has only won one of his last four fights, with that lone win coming over Mauricio Rua at UFC Fight Night 26. Belfort will enter the fight on a three fight winning streak and he is returning to light heavyweight for the first time in almost two years. UFC 175 takes place on July 5th from the Mandalay Bay Events Center in Las Vegas, Nevada with Chris Weidman and Lyoto Machida headlining.
