Mayweather is too old to be running from the more accurate, harder punching and more active fighter than Maidana that Manny is.

He wont do it. Based on the Maidana second fight, Floyd can't possibly go 12 hard rounds with Manny and come out better than he did against Maidana the second time around- which really wasn't that good, even though he won a clear UD. Not a blow out, but a clear UD.

Mayweather won't risk that with Manny- he may win, but the ass-kicking would be severe.