"I really feel bad for the fans that have been waiting for the Pacquaio fight for so long. It's just, if I fight a fighter, I want to make sure that fighter is 100% all-pure and all-natural. He just doesn't want to take these same tests. I work too hard to take a chance of losing to a fighter that's cheating. I'm not saying that Manny Pacquaio is cheating. That just goes for any fighter." Floyd Mayweather