it always amazes me how much the strings move on a racket anyway. I remember seeing some footage filmed on super high framerate camera slowed down of a squash player hitting a forehand. On impact the strings stretched like two inches back from where they are normally at the sweet spot of the racket. Also when the ball hits the wall it squashes to like a half inch thick flat disc and then exploades out again as it fires off the wall. no wonder I'm always bursting balls.....

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