Deleted member 307496
His talent is much greater than the players you usually place above him; it's typical you would mention him.On a grander scale: Hewitt.
Obviously he had the talent to be a champion, but his mentality is several tiers above his talent.
His mentality also wasn't always all that great, his matches against Federer show this (even though he had nowhere to go in his matches and pretty much no chance against him, he always had that resigned look on his face when facing him).
I'm going to say Rafter.