SUNRISE, FLA., AUG. 8 -- Bobby Joe Young scored a seventh-round knockout of former World Boxing Council junior welterweight champion Aaron Pryor tonight in a bout marked by Pryor's antics.

Pryor, who was unbeaten in 36 fights, was attempting to come back after a bout with cocaine addiction. His strange behavior in the ring included taking a swipe at Young's trainer before the fight, helping the timer count him down after a first-round knockdown and, down on one knee, crossing himself several times as he was counted out in the seventh.

"It was a good tuneup for me," said Pryor, 32, who made little sense in post-bout comments. "It put me on my Ps and Qs. That's the first time I lost. Merry Christmas. So what."

Young landed a powerful right early in the seventh round that sent Pryor flopping to the canvas. He stood up, but went back down to his knee and began to cross himself. Referee Bernie Soto stopped the fight when Pryor still was on his knee at the count of 10.

"The right I hit him with, I wasn't surprised that it put him down," said Young, 28, of Steubenville, Ohio.

Pryor's corner filed a protest early in the fight because they claimed Young's corner had used an ammonia capsule to keep the fighter sharp between rounds.

Dr. Paul Berman said Pryor had blood coming from his right ear and an ear injury could have hurt his balance. Pryor said he wasn't hurt.

Young floored Young is 30-5-2 as a pro. He weighed in at 146; Pryor was 148.

Rojas New Champion: In Miami, Sugar Baby Rojas of Colombia became the WBC junior bantamweight champion, defeating Santos Laciar of Argentina by unanimous decision.