This is nothing new. He has had ALL the tools to be Top 10, maybe even Top 5 however he is so mentally weak.
Don't bring up the fact that he came back today, because he has had great wins before by digging deep (USO 10 vs Ferrer) however he just can't keep it up.
From a technical standpoint his forehand is as lethal as anyone in the ATP when it is on. The problem is exactly like a switch, when its off its off. He cannot hit inside the lines for the life of him.
I mean watch this video...this match was SO EPIC. The return at 3-1 in the breaker was just out of this world.