PBF is ducking Cotto, Margarito, Mosley, and Judah (for rematch). Because he knows he has a better chance to losing to those fights. Judah is one of the only fights to go the distance with Floyd, and both Cotto and Margarito are better than Judah at this state. Like Nickey said, PBF is afraid of another fighter making him look ugly instead of pretty. I believe thats why he changed his name to "Money Mayweather", because he knows he won't look pretty anymore but he knows he'll have the money.