@WSJ Speaking of smart rackets, check out @Shot_Stats' device that makes any racket a smart racket -http://kck.st/1slmpDb
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@WSJ: How much can tennis players improve with high-tech tools that measure their every move? http://on.wsj.com/1mpn0BR "Thanks. Twitter will use this to make your timeline better. UndoUndo
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@WSJ: How much can tennis players improve with high-tech tools that measure their every move? http://on.wsj.com/1mpn0BR "@ESPNtenisThanks. Twitter will use this to make your timeline better. UndoUndo
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