Who Did Floyd Mayweather Bet On?

Floyd Mayweather looks oh so happy in this photo, courtesy of TMZ. Apparently, he partied with some friends at XS (located in the Encore Hotel) after the big fight between Manny Pacquiao and Miguel Cotto Saturday night. By the looks of it, Mayweather bet on the right person. Now is he going to take it one step further and fight the number 1 boxer in the world today?