On May 7, 2011, the eight (8) division world champion and the pound-for-pound king of the ring Manny "Pacman" Pacquiao is set to square it off with Sugar Shane Mosley for the WBO Welterweight World Title. The much anticipated event will take place at the MGM Grand Arena in Las Vegas, Nevada.

Pacquiao is fighting after a 12 round demolition of Antonio Margarito for the WBC Super Welterweight Title that happened last November 13, 2010. While Mosley is coming from a fight that resulted to a draw against Sergio Mora.