In many ball sports like golf, football and tennis, controlling the ball’s spin is an important skill. Expert players can make golf balls curve around obstacles, launch footballs towards goal posts ...

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 ...

For a while, the general theme in tennis was power, power, power. Today, if you rely on sheer power alone, you’ll come in last place. It’s a major part of the game, but spin has become an even bigger ...