Originally Posted by Cheetah
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.
The backswing is what we're talking about, yes? This is leading with the elbow: