Whipping his racquet through the air like a cesta in jai alai, Rafael Nadal produces such tremendous topspin that the ball sometimes seems to catapult off the court, creating a shot as challenging to ...

This smart tennis ball machine tracks your movement, adapts to your game, and delivers full-court drills with pro-level speed, spin and versatility.

Professional tennis players call it “the Luxilon shot,” and, apparently, you can hear it coming. The ball crosses the net hissing and spitting like some enraged tropical insect. Its most lethal ...