Some bounces come fast. Some balls, though, hang in the air just a little bit longer. Because of these slight differences in the way the ball bounces, every player on the #ATP and #WTA Tours has a specific preference when it comes to $Tennis balls. Every player must prepare for a tournament based on the official ball.

Read more at: http://www.si.com/tennis/2015/10/14/tennis-balls-atp-wta-matches

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