Manny Pacquiao - Juan Manuel Marquez IV

Associated Press
Juan Manuel Marquez, from Mexico, right, knocks out Manny Pacquiao, from the Philippines, in the sixth round of their WBO world welterweight  fight Saturday, Dec. 8, 2012, in Las Vegas. Referee Kenny Bayless looks on at left rear.  (AP Photo/Julie Jacobson)

View gallery

38 photos

Manny Pacquiao was dropped by a vicious right hand by longtime rival Juan Manuel Marquez in the sixth round as the two fought for the fourth time at the MGM Grand Garden Arena in Las Vegas, Nev. on Saturday, Dec. 8, 2012.

View Comments (0)