The goal for tennis ball manufacturers has always been to manufacture tennis balls that will retain their original air pressure and bounce properties for as long as possible. Recently, Wilson Sporting ...

A tennis ball's spin barely decreases during flight, and actually increases when the ball hits the court. "Looking at slow-motion video, you can see that the friction of the court grabs the bottom ...

A few decades later, Head sold his company, retired, and took up tennis. Like, he went all in: built a court at his house, hired a coach, bought a newfangled ball machine. But again, he found a ...