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    3. Why do the professional tennis players bounce the balls before serving?
    Why do the professional tennis players bounce the balls before serving?

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    +1  Views: 603 Answers: 4 Posted: 15 years ago
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      4 Answers

      it's all part of warming up , similiar to pro baseball player scratching his .......
      15 years ago. Rating: 2
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        To see if it works.
        15 years ago. Rating: 1
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          To see if it works.
          15 years ago. Rating: 0
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            Could be,to see if it hallow,in case iron ball?
            15 years ago. Rating: 0
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