Wouldn't be difficult to determine rhs from a graphic like that because that kind of pic only shows the horizontal movement? What about the low to high movement and the wrist flex and pronation which all contribute to the speed of the face. You can't really see the wrist and forearm movement contributions in that pic only horizontal movement of the entire racquet. no?
So even if the arm itself isn't accelerating at contact the racquet head should be because of the above movements. You can't see wrist and forearm movements in that pic but we all know it's there and with nadal he uses a lot.
Last edited by Cheetah; 10-02-2012 at 06:18 PM.