LAS VEGAS — In just one round, Floyd Mayweather Jr. got a head butt, a kiss and a hug from Victor Ortiz.
He responded with a right hand that ended a bizarre fight early.
Mayweather remained unbeaten and did it in emphatic fashion Saturday night, stopping Ortiz at 2:59 of the fourth round to take the piece of the welterweight title Ortiz brought into the ring.
The end came just as the two fighters emerged from a break, in which Ortiz had embraced Mayweather in the center of the ring. As they broke, Mayweather shot out a left hand and followed it with a right that put Ortiz down in his corner.
Ortiz struggled to get up as referee Joe Cortez called an end to the fight.
"We touched gloves and we were back to fighting and then I threw the left and right hand after the break," Mayweather said. "In the ring you have to protect yourself at all times."
The round was already controversial, as Ortiz appeared to head butt Mayweather intentionally, leading Cortez to take a point away from him. After the head butt, Ortiz went to Mayweather and gave him a kiss on the cheek.
Seconds later they were in the center of the ring ready to resume action when two punches ended it quickly.
"I took the break by the referee and I obeyed exactly as I was told," Ortiz said. "And then, boom, he blindsided me."
Mayweather was winning the fight through three rounds, dominating with speed and landing good right hands to the head of Ortiz. He won all three rounds on two ringside scorecards, and two of three on the third.
Ortiz picked up the pace in the fourth round, trying desperately to get inside Mayweather's vaunted defense. He did on occasion and was having a better round when, late in the round, he appeared to intentionally head butt Mayweather in frustration as the two fought in Mayweather's corner.
"He did something dirty when it was his corner who said I was dirty," Mayweather said. "But I won the fight."
Mayweather later engaged in a verbal confrontation with HBO announcer Larry Merchant, calling him a name at one point and drawing a pointed response from the veteran broadcaster, who said he would thrash the boxer if he "was 50 years younger."
While Ortiz claimed he was caught by a punch that came before Cortez ruled the fighters to continue, the referee said Mayweather did nothing wrong.
"Time was in, the fighter needed to keep his guard up. Mayweather did nothing illegal," Cortez said.
Mayweather, a 5-1 favorite in the fight against a champion 10 years younger, had vowed to go right after Ortiz and give the fans who bought the pay-per-view card at home an exciting fight. He mostly delivered on that promise, landing some good right hands in the early rounds and winning exchanges with his quickness.
MORALES WINS PIECE OF FOURTH WORLD TITLE: At Las Vegas, Mexican boxing great Erik Morales won a piece of a fourth title Saturday night, stopping late replacement Pablo Cesar Cano in a junior welterweight bout.
Morales, the last fighter to beat Manny Pacquiao, battered and bloodied Cano before the fight was stopped after the 10th round with blood streaming down the side of Cano's face from a cut next to his left eye.
Morales, who retired in 2007 only to come back three years later, was coming off a loss to Marcos Maidana in his last fight. Cano, who replaced an ill Lucas Matthysse just last week, fought hard but was outclassed by Morales for much of the fight.
Morales improved to 52-7 with 36 knockouts.
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