“Manny is ready to go,” the Filipino southpaw’s trainer Freddie Roach told reporters at the MGM Grand where the scheduled 12-round bout will held on Saturday evening.
According to his management team, Pacquiao was returning from church when the sport utility vehicle he was in was hit from behind at low speed by one of his security vehicles.
A Pacquiao team spokesman said the 10-times world champion was “a little shaken up” but not injured.
The 32-year-old Filipino, already acknowledged as one of the best offensive fighters of all time, is a 6-1 favorite to beat American Mosley at the MGM Garden Arena.
Although Mosley is a former three-division world champion, at the age of 39 he is in the twilight of his impressive career.
Mosley, 46-6-1 (39 knockouts), has not competed in the ring since his draw with Sergio Mora in September.
Pacquiao, 52-3-2 (38 KOs), is fighting for the first time since he recorded a ruthless points victory over Mexican Antonio Margarito in November for his eighth world title in an unprecedented eight weight class.
