NEW ORLEANS -- Derrick "Smoke" Gainer took away Fred "Lil' Hagler" Norwood's WBA featherweight title on a knockout in the 11th round Saturday night.

Referee Paul Sita called the fight 1 minute, 56 seconds into the round as Norwood slumped in Sita's arms on the canvas. Norwood had just hit Gainer with three straight low blows.

As Sita grabbed Norwood, dragging him to the canvas, Gainer landed two low blows.

"I wasn't quite sure if it was a low blow," Sita said. "He hit Gainer with a low blow a number of times before."

Norwood appeared to be trying to get up when Sita called the fight.

"You can give him a 20-second count. He could have had a five-minute rest if he had got up," Sita said. "I ended the count after 13 because he wasn't getting up."

Both fighters threw several low blows earlier in the fight.

"He was very dirty," Gainer said. "He was hitting me low and in the back of the head. I hurt him with every shot I threw."

Gainer also lost a point for a low blow in the sixth round.

Norwood went down three times, although one was not a knockdown. That time both Norwood and Gainer hit the canvas.

In another bout on the undercard of Roy Jones Jr.'s fight with Eric Harding for the undisputed light heavyweight championship, Marco Antonio Barrera retained his WBO junior featherweight title with an unanimous decision over Jose Luis Valbuena.

In earlier bouts, heavyweight Kelvin Davis beat Maurice Marshall with a TKO 28 seconds into the second round of a scheduled six-round bout. Welterweight Antonio Young beat Mujtabaa Muhammad, who was making his pro debut, in a four-round unanimous decision.