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I have often seen this picture of the Sampras serve:
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The dot depicts the top of the racket. I had always misinterpreted this as meaning that the arm moves faster prior to impact, but actually it is just the pronation of the upper arm and forearm, along with a continental or eastern backhand grip which whips the racket forward.
As is evident here. The arm is practically still...
Uploaded with ImageShack.us
Uploaded with ImageShack.us
The dot depicts the top of the racket. I had always misinterpreted this as meaning that the arm moves faster prior to impact, but actually it is just the pronation of the upper arm and forearm, along with a continental or eastern backhand grip which whips the racket forward.
As is evident here. The arm is practically still...
Uploaded with ImageShack.us