Hewitt, Roddick Nalbandian are stii good players but dont dominate as when they were 24 or 25. On the other hand guys like Federer, Fish (not 30 yet I think, have to check) and in the past Agassi, Laver and Connors , to name three, were still at the top at that age. Why is this so? Any opinions? I think it has to do a bit with injuries which affect confidence and the overall physical conditioning and rhythm.