
Manny Pacquiao

Manny Pacquiao

Manny Pacquiao covers up as Timothy Bradley throws a punch in the first round of their WBO world welterweight title fight Saturday, June 9, 2012, in Las Vegas. Bradley won a split decision. (AP Photo/Chris Carlson)

Manny Pacquiao covers up as Timothy Bradley throws a punch in the first round of their WBO world welterweight title fight Saturday, June 9, 2012, in Las Vegas. Bradley won a split decision. (AP Photo/Chris Carlson)

Timothy Bradley (right) has won all 28 of his fights, 12 by knockout, but he's not been in the ring with anyone of Manny Pacquiao's caliber. There are whispers in boxing circles, though, that at 33, Pacquiao is slipping. (Associated Press)

Timothy Bradley (right) has won all 28 of his fights, 12 by knockout, but he's not been in the ring with anyone of Manny Pacquiao's caliber. There are whispers in boxing circles, though, that at 33, Pacquiao is slipping. (Associated Press)

Manny Pacquiao (right) hits Juan Manuel Marquez during their WBO welterweight title fight on Nov. 12, 2011, in Las Vegas. (Associated Press)

ASSOCIATED PRESS Manny Pacquiao knocked Shane Mosley down in the third round, then spent the next nine rounds chasing him before earnining a unanimous decision.

Senate Majority Leader Harry Reid of Nev. listens at left as Filipino Congressman and eight-term world champion boxer Manny Pacquiao speaks on Capitol Hill in Washington, Tuesday, Feb. 15, 2011. (AP Photo/Alex Brandon)