The Heavy Ball

Physics of the heavy ball — why pro balls feel different and how it changes the game.

Articles

Article	Focus
Ball Speed in Pro Tennis	Velocity trends
Ball Spin in Pro Tennis Part 1	Spin measurement
Ball Spin in Pro Tennis Part 2	Spin analysis continued
Groundstroke Velocities Soar	Historical velocity increases
Mysteries of the Heavy Ball Introduction	Heavy ball defined
Speed and Spin	Speed-spin relationship
Spin Rates and Axis of Rotation	Serve spin axis
The Heavy Ball TOC	Table of contents
The Heavy Serve — Practical Implications	Receiving heavy serves

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Start here: Mysteries of the Heavy Ball