I tink that the prime Mayweather is indeed over. The long inactivity has hurt him. The speed and reflexes may seem intact against a smaller older opponent, but against Mosley it will tell. Yes Mosley is older but I believe that Mosley is one of those wonders that overall had a greater ability than Mayweather in terms of ring generalship and power. Lets face it, Money didn't look all that dominating against an old Oscar. I think the fight with Mosley will be like Ali-Frazier I. MOney will try to dance his way in and out and Mosley will grind him down for a narrow decision.