What are tennis balls made of? Modern tennis balls are made of a hollow rubber core, covered in a wool or nylon shell which is known as the nap. Pressurised air inside the rubber core makes the ball ...

“The risk of injury is very low,” he told a small group of ... service routine in tennis. “The fidgety setup, where he can’t seem to get comfortable over the ball is a concern in its ...

This class uses USTA approved red balls and is geared toward learning the game of tennis from an early developmental stage.