For what it's worth, I don't include Williams in the discussion at 147. His last 2 fights have been at 160 and 154, his next fight is at 160, and I don't expect him to ever fight at 147 again, no matter what his handlers say.

Right now Mosley has the right to consider himself the man at 147, although it would help his case to beat Cotto. If Mayweather were to comeback and beat Mosley, then I think he could consider himself the man, since he was the lineal/Ring champ before retiring.