K****D
发帖数: 30533 | 1 ☆─────────────────────────────────────☆
babolat (Aeropro) 于 (Fri Aug 14 23:27:34 2009, 美东) 提到:
The power of my flat serves increases noticeably with pronation. But i am
not able to pronate in my kick serves at all. Is there any natural way to
pronate in kick serves? Something like the instruction for flat serve would
be great: trying to cut the ball with the racquet frame at the beginning of
racquet acceleration, and then changing the racquet orientation 90 degree to
face the ball as the ra |
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