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A battle of TUF Brazil III coaches will be the co-main event of UFC 173 as Wanderlei Silva battles Chael Sonnen. Silva has rotated wins and losses in his last six UFC bouts, with his last fight being a victory over Brian Stann at UFC On Fuel TV VIII. Sonnen has only won one of his last four in UFC competition, with that lone win coming over Mauricio Rua at UFC Fight Night 26. UFC 173 takes place on May 25th from a location TBA in Las Vegas, Nevada with Chris Weidman and Vitor Belfort headlining.
