service court 发球区 long 你好gh serve发高远球toss service 抛球发球法 2011年02月27日 face of racket 拍面 advantage 上风分 clear 高远球top and back 混合双打中一前一后的站法 ..
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On Sunday he went around the ball a lot and when you do that you give up a lot of court space, so your success depends on your balance when hitting that shot as that is what operates the face of the racket.
CNN: Federer 'is the greatest ever tennis player'
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