as long as he continues to work on his fitness, and gains more consistency in groundstrokes, he's got the top 10 potential. though he has to keep playing at this high level day in day out and he'll be able to stay around for a long time.
i agree w/ ibetontennis.
he needs to stay healthy and get in better shape...then he will be a legit top 10 player.
its hard for some players to stay in shape...just ask fat david nalbandian and marcos buffet baghdatis