Mysteries of the Heavy Ball
John Yandell
Mysteries of the Heavy Ball: IntroductionBall Speed in Pro Tennis
Ball Spin In Pro Tennis
Ball Spin in Pro Tennis Part 2
Speed and Spin in the Serves of Pete Sampras and Greg Rusedski
Practical Serving Implications
John Yandell, David Whiteside, and Bruce Elliott
Spin Rates and Spin Axis in Elite ServingJim Fawcette
The New Top Ball Speed in Pro Tennis - NEW