Manny Pacquiao returns from retirement on Saturday night to face WBC welterweight champion Mario Barrios. Whether Pacquiao's decision to return to the ring proves to be ill-advised or a moment that grows his legend is still to be seen.

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.