Here's when the fighters are expected to enter the ring as Manny Pacquiao challenges WBC welterweight champion Mario Barrios in Las Vegas.

Manny Pacquiao returns to the boxing ring for the first time in four years on Saturday to face Mario Barrios. The 46-year-old Pacquiao is understandably an underdog given his lack of recent time in the ring. WBC welterweight champion Barrios is 16 years younger than his opponent and has fought five more times than him over the last four years.

Manny Pacquiao is trying to become a world champion once again at 46 years of age. But how long has he been away from boxing?