
Pacquiao (54-3-2) didn't get the knockout he sought, but the Filipino Congressman kept his spot as boxing's top pound-for-pound fighter, methodically beating Mosley (46-7-1) at the MGM Grand Garden.
The eight-division champion knocked down Mosley with a right-left combination midway through the third round, just the third knockdown of Mosley's decorated 18-year career.
The 39-year-old Mosley was credited with a knockdown in the 10th round when he appeared to push Pacquiao while the champion threw a wild punch.
Pacquiao finished with ferocity despite scattered boos, keeping Mosley winless in three fights.