Incredible mental strength? After choking away 2 sets? (He should have taken the 2nd, then the 4th) Let's not get carried away here. It was always a given he would be fresher physically in the 5th. That's not exactly the same as mental toughness on high pressure points.
ETA: I have to say his stamina has improved (not the same as mental toughness) probably due to Lendl's fitness programme. In both USO final and AO semi, he had plenty left for the 5th after a complicated match. That's what's impressive to me.
Last edited by veroniquem; 01-25-2013 at 11:30 AM.