Mark Breland retained his World Boxing Association welterweight title Saturday when Rafael Pineda quit 1:14 through the fifth round.

Pineda, whose left eye was closed, turned his back to the champion and spit his mouthpiece over the ropes. Breland whacked him a right to the side of the head before referee Ted Pick stopped the bout. The outcome was ruled a technical knockout.The end was similar to the famous "no mas" bout in 1980 when Roberto Duran quit against Sugar Ray Leonard.

Pineda, who claimed he was thumbed, also turned his back on Breland midway through the fourth round. Breland hit him a hard right then, but an angry Pineda turned and fired back with a right and finished the round.

"He got thumbed and couldn't see," Pineda's trainer Ramon Dosman said. "But my boy's not supposed to do that (turn and quit)."

Pineda's eye was swollen in the second round and closed by the fourth. Still, the Colombian acquitted himself well - especially for a substitute opponent fighting for the first time as a welterweight.

Breland was originally scheduled to fight World Boxing Council welterweight champion Marlon Starling April 15, but Starling pulled out with a shoulder injury. Starling handed Breland the loss and draw on the WBA champion's 24-1-1 record.

Breland, 25, said his left knee locked early in the fight and he had trouble keeping his balance. He twice fell to the canvas without being hit.

The 1984 Olympic champion has stopped 17 pro opponents. Pineda, oddly ranked No. 1 by the WBA, dropped to 20-1. He had fought mostly as a lightweight and never weighed more than 142 before.