Undefeated Miguel Cotto stopped Carlos Quintana in the fifth round Saturday night to win the vacant WBA welterweight title.
Quintana, bleeding from his mouth and from under his left eye after a sustained attack by Cotto, was knocked down twice in the fifth round and staggered back to his corner. The fight was stopped before he could come out for the sixth round.
"I could tell from the look in his eye that he didn't want to go," Dr. Dominick Coletta, the ringside physician.
"His corner wanted him to go, but he didn't want to."
Cotto's (28-0, 23 KOs) came out from the opening bell and mercilessly pounded Quintana, who entered the fight 23-0 with 18 knockouts.
"He was too fast," he said. "I was surprised at his hand speed."
The WBA title was vacated when Ricky Hatton moved up a weight class.
In the co-feature, Antonio Margarito unanimously outpointed Joshua Clottey to successfully defend his WBO welterweight title.
Margarito (34-4), who was making his seventh defense of the belt he won in 2002.
Against Clottey (30-2), Margarito trailed early but gradually wore down the Ghanaian, who was appearing in his first title fight.
On the undercard, undefeated middleweight Yuri Foreman improved to 22-0 with a 10-round decision over Donny McCrary. Foreman sent McCrary (20-5-2) to the canvas in the third round, but McCrary rallied and made Foreman work to earn the decision.