Strike Zone
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Lee Couillard, USPTA, Head Tennis Professional, Punahou School, Honolulu, Hawaii explains the strike zones in tennis.
As confusing as the strike zone may seem, it really isn't. There are specific reasons why it's different today than it was in generations past.
Strike zone comes from baseball. Your preferred strike zone in tennis is determined by many factors: your grip, your stance, your height and the surface you mostly play on. Also, the strike zones vary from the shoulder to the knees (preferred strike zone), from around the head to the knees (advanced players) and from just above the head to just above the ankles (expert players). Your predicting and intercepting skills determine whether or not you can hit the ball in your ideal strike zone.
The taller the player, the larger the strike zone.