Boxing superstar Floyd Mayweather (42-0, 26 KOs) scored a fourth round KO over WBC welterweight champion Victor Ortiz (29-3-2, 22 KOs) in round four on Saturday night at the MGM Grand Garden Arena in Las Vegas. Ortiz had a good round two, but Floyd was back in charge in the third. Aftyer a head butt in round four, Cortez broke the action. Mayweather then knocked out Ortiz while he was apologizing with two shots in round four.
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