LOS ANGELES -- Justin Juuko took a beating from IBF junior lightweight champion Diego Corrales, but kept fighting back until he was stopped in the 10th round Saturday night at the Staples Center.

"He was a good, tough fighter," Corrales said. "I hit him with a million punches and he took everything I had."

Juuko, of Uganda, was knocked down in the fourth round, then knocked down again in the 10th when he was stopped with 25 seconds left in the round. While Corrales landed by far the most punches, Juuko landed several hard rights and appeared to have the better of the eighth and ninth rounds.

The fight was on the undercard of Oscar De La Hoya's WBC welterweight championship fight against Shane Mosley.

Unbeaten Erik Morales, the WBC's super bantamweight champion from Mexico, stopped Mike Juarez of Omaha, Neb., in the third round of an over-the-weight match.

While Corrales, who weighed 130, is the IBF junior lightweight champion, that organization did not sanction the bout as a title fight. That meant Corrales would have lost the title if he had lost the fight, but if Juuko had won, the title would have been declared vacant.

Corrales also is recognized as the champion by the fringe IBA.

Corrales, 22, of Sacramento, Calif., is 32-0 with 26 knockouts. The 27-year-old Juuko, 129½, is 34-4-1 with 25 knockouts after being stopped for the third time in his last four fights.

Morales, who weighed 128 pounds, six pounds over the super bantamweight limit, knocked Juarez down in each of the three rounds. After Juarez went down from a left-right to the jaw in the third round, the referee immediately stopped the match at 1:12.

Morales, 23, is 37-0 with 28 knockouts. Juarez lost for the third time in his last four fights and is 22-9-1 with nine knockouts.

In a 10-round match, Shannon Taylor of Australia, the WBC's No. 2 welterweight contender, scored a one-sided decision over Charles Whitaker. Taylor, 150¼, has a 27-0-1 record with 17 knockouts. Whitaker, 150, of the Cayman Islands, is 17-9 with 11 knockouts.