Not only the racket and the string matter ! Balls have direct impact on the game.
A mini-tennis ball for learning which is 50% slower.
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Vote for your champion between @johnhmillman (@LexChallenger), @deniskudla (SF @BBTatlantaopen) or #Istomin ! #TeamTF http://t.co/9fSqAcdJxd
04 Aug. - 10h02