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How To Pressurize / Revive Old Tennis Balls...
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09-19-2011, 05:31 PM
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Wilson 1986
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Join Date: Sep 2011
Location: Narnia
Posts: 188
having said that, why would you use old balls for serving practise? hitting with old balls can cause damage to your shoulder and elbow.
so why risk using said balls when you are hitting the ball as hard as you can during your serve?
Wilson 1986
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