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Old 09-21-2012, 04:13 PM   #34
toly
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Here is a sequence of pro flat serve.


Figure 8. Flat serve

During impact, frame #3 and #4, the racquet moves downward. The racquet doesn’t move up due to the wrist ulnar deviation is locked. So, there is no topspin at all and just a little sidespin. To produce this kind of racquet swing the hand/wrist muscles must be active.
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Last edited by toly : 10-22-2012 at 05:53 AM.
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