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Old 06-03-2012, 06:10 PM   #61
nat75
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Join Date: May 2009
Posts: 206
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Quote:
Originally Posted by BeHappy View Post
Pretty much, since Federer got famous they customized his pro staff 6.0.85 and mass marketed it.
Any good source to read more about it?? I can't imagine hitting hard with an old racket and tolerating all the vibration. Let's not talk about the smaller sweet spot.
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