Verkerk was a man of mystery. He had lots of talent for sure, but a serise of injuries after 2003, and I hear he had commitment problems before 2003.
True. He could have definitely got more out of it, but he never really did. Until Roland Garros 2003 of course. And during DC he was pretty good. But that was it.
More Dutch players have problems with their attitude and commitment...also Thiemo de Bakker. But he obviously found a way to play pretty well.