I know they have the same court surface and balls just like in US Open, but so many players complain about very fast surface.. and bad balls (Safin). Does the humidity or lack of it play such a big factor in how fast the balls are flying? I watched Fed match and I could tell, that one good shot is pretty much enough to win the point.. that's how fast the courts are.. I don't remember courts being so fast at the Open. And why the hell Safin complain about balls again?