Murray never shows up in the Slam rounds.
Federred, Nadal etc change a gear up, when the cross the reach Semi-final stage in a grand slam. But Murray panics. He is more than capable of beating these guys on talent alone. But it appears he is a big chocker....
He has in fact defeated Djokovic, Federer, Nadal etc in the ATP tournaments every now and then. He needs to find a way to overcome himself in the Grand Slams....