There were definately some strange lapses, Haas at Wimbledon 09 and the loss at FO 2010 come to mind. As well as 2008 Safin at Wimbledon, though grass is his worst surface and Safin had his last hurrah there. He never would have past Fed in the semi anyway.
But most slams, he was pretty close.
07 USO final. He just wasnt ready. He was good enough and should have won this match.
08 RG. Superman Nadal. But he absolutely ran him close in set 3, he played great. But this isnt his fault, this was clay GOAT at his peak. He got closer than Fed did.
08 USO. Fed beat him in a close match. Fed was great in this tourney, JesusFed came out in the final.
09 AO. The heat got him, he was winning that Roddick match otherwise.
Its his own fault but this can happen to anyone.
09 FO. This was the one real let down for me. He played like a doofus.
09 USO - Again, lost out to a very good Fed in 3 very close sets.
2010 AO - Got the shits in a bad way
2010 SW19 - Got beat, but there was a bad call vs him in set 2 tiebreak that changed the whole direction of the match.
2010 USO - Dont really know what happened here. He was tired but shouldnt have been.