At first I was like yea Ronda would take him down and do what she wants.
But thinking more, Mayweather is the best boxer in the world. His whole game is being fast, footwork, and avoiding. I don't see why he could avoid her enough to find a lightening fast jab as he circles. All he needs to do is find her face once with not even a hard shot. I think the best boxer in the world could avoid her for the few seconds he needs to land 1 shot.
I could defiantly see the scenario where Ronda subs him but I think it is more likely that he tags her with a combo she doesn't even see coming.
FOr the record I can't stand Mayweather.