all those videos show them leading w/ the elbow except nadal and you can see his elbow goes back before the hand. then the hand goes behind the elbow (the backswing). the videos you showed are starting from midway from the takeback. Look at a video that shows them starting from the ready position. they lead with the elbow then elbow stops and hand goes behind.
Yonex VCore 100s - SW 351 6pts HL Tour Bite / Luxilon 4G 16 @ 51lbs
Last edited by Cheetah; 08-15-2012 at 08:11 PM.