Reading the Toss

A player serving on a clay court, seen from high above

Professional returners say the toss is the first thing they watch. What research on anticipation says the toss can and cannot tell a returner, how much it varies even among professionals, and whether reading the serve can be trained.

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The Slice Is Back

A tennis ball bouncing low on a clay court

Some of the best players in the world now slice more backhands than they did a few years ago. What the data say about how often the slice is used, where it wins and loses points, and what backspin really does to the ball.

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