Well he's really 44-3-1 right now Losses to Maidana & Castillo, a DQ loss to Victor Ortiz & a draw with De la Hoya, So I guess 45-3-1
I don't imagine he'll hang around for more than an additional 2. So I'll say 50-0, with his 50th win coming against someone he already beat handily.
The man would be foolish to continue fighting after Berto. He has CLEARLY slowed down and is on his way out. He looked borderline shot (by Mayweather standards mind you) against Pac in my view. Floyd's body is breaking down. I would sincerely hope his friends and family are telling him to give up professional boxing after Berto.
50-0 I imagine he goes for one more because every network and boxing big shot probably tosses big money his way I do like others wonder if he can truly walk away from the kind of money he makes in the ring and when winning with little punishment He may hang around who knows