I think FLoyd might have what happened to Mosley and Oscar though... and they were both naturally alot bigger than Floyd, and both harder hitters, and still moving about the equivalent that Floyd did was too much for them though Oscar wasn't as physically gifted and Mosley wasn't as technically gifted as Floyd it will hard for him to beat younger guys when he gets older at 147... If he stays at 140 which I think he could he will still be pretty strong enough for 140 that his gradually diminishing speed will hold out longer, and there are more people to fight at 140.