With standard technique, grip has a pretty big influence. With the Fed/Nadal technique, it's less about the grip because you can make your grip play more extreme just by pronating your arm more.
Federer/Nadal are not using the same WW that players like Roddick are using. Fed/Nadal are coming up and across the ball, bending at the elbow and pulling inwards towards their body, rather than turning at the elbow and wiping the forearm across like a windshield wiper. There was a great post by Will Hamilton about this, where he talked about how the WW technique he teaches is different than the type used by Fed/Nadal and is more like Roddick/Andreev's technique.
Last edited by TheCheese : 02-06-2013 at 02:13 PM.