Juan Manuel Marquez was floored by Marco Antonio Barrera.

Barrera was floored by the judges' decision.

Marquez unanimously outpointed Barrera, taking Barrera's WBC 130-pound belt Saturday night. Two judges scored it 116-111 for Marquez and the third gave it to him 118-109.

"I know in my heart I won tonight," Barrera said through a translator.

Marquez immediately offered him another shot.

"Barrera is a great champion," Marquez said through a translator. "He deserves a rematch."

And if Barrera chooses not to accept, Marquez has another big-name opponent in mind.

"If not, Manny Pacquiao can be next," said Marquez, who fought Pacquiao to a draw in 2004.

The wild fight ended with both men bleeding -- Barrera from his left eye and Marquez from his right -- and raising their arms in victory. But Marquez was the winner on the cards.

"They were bad judges," Barrera said through a translator. "I won this fight and I don't know what happened. I did the necessary things to win.

"I don't know if they were judges of boxing," Barrera said. "They might have been judges of soccer."

Marquez praised his fellow Mexican but dismissed Barrera's suggestion that the judges botched the decision.

"I don't feel anything was given to me," Marquez said. "They can say whatever they want. The judges scored this fight and they did it well."

It wouldn't be boxing without a controversy.

Late in the seventh round, Barrera (63-5, 42 KOs) connected with a right to the chin that left Marquez (47-3-1, 35 KOs) crouched with one glove on the canvas. Television replays showed that it was a knockdown, but referee Jay Nady ruled it a slip.

Marquez conceded that he had been knocked down.

"He connected," Marquez said. "He got me right on the chin."

When Barrera stepped in and swung at the crouching Marquez again, Nady subtracted a point from the champion. That meant Barrera lost the round 10-8 instead of winning it.

Barrera denied hitting Marquez when he was down.

"I don't know what the referee was doing at the time," said Barrera, who lost for the first time since his 2003 loss to Manny Pacquiao.

"I never connected," Barrera said. "I never threw the punch because I knew he was down. He hit me four times below the belt and I never said anything."

Richard Schaefer, CEO of Golden Boy Promotions, acknowledged that Barrera should have been credited with knocking Marquez down.

"Everybody sees there was a knockdown," Schaefer said. "That obviously was a bad call."

Earlier in the round, Marquez stunned Barrera with a right to the head, then a left. But the champion weathered the attack.

The 33-year-old fighters came from neighboring towns in Mexico but had never met. It didn't take long for them to get acquainted.

Early in the second round, they went toe-to-toe in the center of the ring. That set the tone for the third round, when another furious exchange erupted.

Near the end of the fourth, Marquez knocked Barrera into the ropes, but the champion slipped away and landed a combination.

Heavy exchanges at the end of the fifth and sixth rounds brought the Mandalay Bay crowd to its feet.

Marquez, who moved up from 126 pounds, had said he would knock Barrera out -- a prediction Barrera dismissed as "a dream."

But according to CompuBox statistics, Marquez landed more heavy punches. Barrera connected on 262 punches, seven more than Marquez. But Marquez landed 197 power punches to Barrera's 146.

Barrera, who is winding down a superb career, said he had not decided what he'll do next. Asked if he wanted a rematch, Barrera shrugged.

"Right now, I just want to take a vacation," he said.

AP