Mexican boxer Canelo Alvarez, who’s training for a May 5 rematch against world middleweight champion Gennady Golovkin, has tested positive for the banned substance clenbuterol. For his part, Alvarez says he did nothing wrong—and that the failure must have come as a result of his eating some bad cow meat. “One of his results came back positive for trace levels of clenbuterol, consistent with meat contamination that has impacted dozens of athletes in Mexico over the last years," Golden Boy Promotions, Alvarez's promoter, said in a statement published by ESPN. It’s unclear if the infraction will affect the fight.
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