That's right! May is National Tennis Month! So, in celebration of National Tennis Month, here's a bit of tennis trivia that I'm guessing most of you don't know.
During ATP and WTA tournaments, tennis balls are changed out after every nine games. Except for the first set of balls, which are changed out after only seven games. Why? Because those balls are are also the balls used during warm-up. See? You learn something new here at Tennis Fixation all the time!
Happy National Tennis Month!
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