Floyd "Money" Mayweather Jr. remained unbeaten Saturday, knocking out Victor Ortiz in a fight that will be remembered for its controversial ending.
In the fourth round of the fight, Ortiz landed a flurry of punches on Mayweather and head-butted him.
Referee Joe Cortez deducted a point from Ortiz for what he deemed an intentional headbutt.
But as Ortiz appeared to be apologizing, he tried to hug Mayweather, lowering his guard.
Mayweather responded with a left followed by a quick right that sent Ortiz to the canvas.
Ortiz could not answer the referee's 10-count, and Mayweather became the new World Boxing Council welterweight champion in Las Vegas.
Ortiz said he was blindsided by Mayweather and his knockout came as part of a miscommunication with the referee.
"There's two ways to look at it, but as far as I was concerned, I came here to entertain the fans, and I think they were entertained," he said. "There was a miscommunication with the referee, but nobody is perfect and this was a learning experience."
The Controversial post fight interview
In the post-fight interview, Mayweather told HBO boxing analyst Larry Merchant that, "in the ring, you have to protect yourself at all times."
When Merchant tried to press the boxer about the controversial ending, Mayweather berated him, telling him that "you never give me a fair shake." Mayweather also told Merchant, "You don't know s---- about boxing."
Merchant replied, "I wish I was 50 years younger and I'd kick your ass."
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