After watching many Nadals vids on Youtube, I noticed Nadal's changed his forehand take back a little bit. First watch this video of FYB which has been filmed in 2009: http://www.youtube.com/watch?v=soADAL_uGs8 Now watch him 1 year later in Monte Carlo: http://www.youtube.com/watch?v=1s6o66M1Lsg In the first vid, you can see an extra movement at the end of take back, he supinates a little bit and then pronates. But when you look at his recent videos you can easily see he has no supinations whatsoever on his take back. It was just interesting to me how a pro improves and modifies his technique even when he's at the top of the game. Maybe it's not just about talent, they do think about their technique and modify it if it's not perfect.