Pacquiao-Marquez undercard results

Mike Alvarado (above) was beaten and bloodied early, but rallied for a dramatic 10th-round stoppage of Breidis Prescott on Saturday's undercard. (AP)

LAS VEGAS -- WBO junior welterweight champion Timothy Bradley (28-0, 12 KOs) scored knockdowns in the fifth and sixth rounds on his way to an eighth-round stoppage of Joel Casamayor (38-6-1, 22 KOs) in a 12-rounder. Casamayor had trouble finding the elusive Bradley, landing just 41 of 290 punches (14 percent).

Mike Alvarado (32-0, 23 KOs) of Denver, Colo., rallied from the brink of the abyss in the most dramatic way imaginable, stopping Colombia's Breidis Prescott (24-4, 19 KOs) in the 10th and final round of their junior welterweight contest. Prescott had built a lopsided points lead during the first half of the fight, bloodying Alvarado's face badly. But the 31-year-old Mexican-American rallied hard down the stretch, finally dumping Prescott to the canvas in the 10th and connecting with a series of vicious power shots until referee Jay Nady intervened at 1:57 of the final round. All three judges had Prescott ahead on points until the stoppage.

Juan Carlos Burgos (28-1, 19 KOs) of Mexico won a 10-round majority decision over Puerto Rico's Luis Cruz (19-1, 15 KOs) for a minor junior lightweight title. Judges Duane Ford (98-92) and Ricardo Ocasio (97-93) had Burgos on top, C.J. Ross scored it 95-95. Burgos landed 172 of 553 punches (31 percent), compared to 155 of 523 (30 percent) for Cruz.

Dennis Laurente (38-3-4, 20 KOs) of the Philippines scored a one-punch knockout of Albany, N.Y., product Ayi Bruce (13-5, 6 KOs) in an eight-round welterweight bout. The end came at 0:57 of the seventh round.

Rising junior welterweight prospect Jose Benavidez Jr. (13-0, 12 KOs) of Phoenix, Ariz., dominated Sammy Santana (4-5-2, 0 KOs) of Puerto Rico, scoring four knockdowns en route to a unanimous decision. All three judges had it 60-50.

Victor Pasillas (1-0, 0 KOs) of East Los Angeles, Calif., won his pro debut by unanimous decision over Jose Garcia (0-4, 0 KOs) of King City, Calif., in a four-round featherweight fight. All three judges scored it 40-36.

In the night's first bout, Fernando Lumacad (25-3-3, 12 KOs) of the Philippines won an eight-round decision over Joseph Rios (10-6-2, 4 KOs) of San Antonio, Texas., in a super flyweight fight. Lumacad put Rios down in the first and fifth before coasting to the finish. The judges' scores were 78-72, 77-73 and 77-74.

-- Bryan Armen Graham