Floyd Mayweather cemented his status as the best pound-for-pound boxer in the world with a unanimous decision over Manny Pacquiao as the "Fight of the Century" failed to live up to the hype here Saturday.

Scattered boos rang out around the crowd of 17,000 in the MGM Grand after Mayweather comfortably outboxed his Filipino rival to frustrate hopes of a full-blooded slugfest.