Floyd Mayweather - 'Money', as the nickname suggests, made a fortune fighting on professional rings. American boxer who was in possession of all major stripes: WBO, WBC and WBA. Invincible.
Manny Pacquiao - 'Pac Man' was a WBC world champion in as many as 4 weight categories. Each kilogram brought to the ring was equally accurate, moving equally vigorously and winning equally well. National hero of the Philippines.