From the new and upcoming bunch of young talents. I think Richard Gasquet has the most potential after the Federer era (of course we also need to see if Nadal is for real on grass and hard). Gasquet has the most beautiful and natural one handed backhand in the game, especially the down the line shot is deadly. I have the good fortune of watching him play from courtside twice at US Open. Very impressive. He seems to get hurt often though, and was cramping badly in the loss to Hewitt at this year's US Open. Seem to me his only problem is physical conditioning, a problem that should be easy to fix if he is committed to it.