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Chael Sonnen has failed a surprise pre-fight drug test from the Nevada State Athletic Commission and he is off UFC 175, opponent Vitor Belfort has been pulled from the card as well. Sonnen failed the test for two different banned substances, but the NSAC has yet to announce which ones they are. UFC 175 takes place on July 5th from the Mandalay Bay Events Center in Las Vegas, Nevada with Chris Weidman and Lyoto Machida headlining.
