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Roger Federer's Racquet Setup - What strings does Federer use?
تويتر \ Jonathan على تويتر: "The best thing about the Federer Google Glass vid is seeing he still uses 19x16 string pattern + 10 string savers - http://t.co/18IgXourQA"
Tennis String Saver & Improver
Tennis Players Are Helped by Products (at Least They Think So) - The New York Times
A Complete Guide On Tennis String Savers - Improves
Tennis String Savers | A Complete Guide to Using, Installing & Buying