I don't think it will be such a shut-out for Floyd (Malignaggi's rant was a bit over the top). I'm certain that the fight will be quite competitive in the first third or so, with Mayweather trying to figure Pac out.

If Floyd manages to do that without any knock-downs, he'll pull it off. But if Pac scores an early knock-down or two, it will be up to the judges (so he'll pull it off then also).