Pacquiao vs. Bradley Undercard: Live Results and Highlights for Every Fight

In the co-featured bout, Gilberto Ramirez captured the WBO Super Middleweight Championship with a surprising shutout unanimous decision over veteran Arthur Abraham.

The official cards all favored the 24-year-old Ramirez by margins of 120-108.

Ramirez (34-0, 24 KO) used his height and reach advantages to stick and move from the outside, frustrating the now-former champion and relegating his offensive output to anemic levels.

With the win, Ramirez becomes the first Mexican fighter to capture a world title in the 168-pound division.

On the undercard, Oscar Valdez scored the most impressive win of his young career, dominating and stopping former world champion Evgeny Gradovich in the fourth round of a featherweight bout.

Valdez (19-0, 17 KO) totally negated his usually aggressive opponent, opening cuts over both eyes and bludgeoning him with a left hook that put him on the mat and prompted referee Russell Mora to mercifully halt the contest.

In the opening contest, unbeaten prospect Jose Ramirez pounded out a unanimous decision over a game Manny Perez in a highly physical junior welterweight fight.

Ramirez (17-0, 12 KO) took the win by official scores of 97-93, 98-92 and 99-91.