Too bad he never followed through on the start of his career. Though it's mostly through injuries. Still, I think it's also the development of Nadal and Djokovic (eslecially Djokovic) being such insane returners that a big serve isnt as great a weapon as it once was. And while Delpo is by no means one dimensional, he can't can't consistently compete with the big three if you take away the serve. Injury or no.Thinks it’s him or Del Potro. Crazy as Del Potro won his when he was 20. He also beat Fed and Nadal on the way to winning it.
As for all the others from the 90's, they just dont have the mental fortitude. A completely wasted generation. Though in their defense they had to compete with some of the greatest ever players.