Just what kind of fight will Mayweather-Pacquiao be? (The Associated Press)

Five years in the making, Floyd Mayweather Jr. and Manny Pacquiao meet Saturday night in the richest – and arguably most overhyped – fight in the history of the sport. Will Pacquiao score early and often to beat a fighter who has never been beaten? Will Mayweather risk standing and trading punches, or be content to use his defensive wizardry to win for the 48th straight time? Mayweather will be risking his legacy against arguably the best opponent of his career, while Pacquiao will carry the weight of an entire nation into the ring at the MGM Grand arena.