SportsLine combat expert Josh Nagel has released his top boxing picks for Saturday's Manny Pacquiao vs. Mario Barrios pay-per-view fight for the WBC welterweight championship at MGM Grand Garden Arena

Pacquiao has come out of retirement in search of Barrios' welterweight title — here's what you need to know.

Age-related concerns aside, Manny Pacquiao is going to have to overcome a significant reach advantage if he has a chance of beating Barrios. While Pacquiao could feasibly have a power advantage, he's almost certainly going to need to absorb punches from Barrios (especially jabs) to get within range.