Thank you very much for comments about the article. But I think you missed the main data from the article. The diagram below illustrates the racket speed which produced by the pronation and internal shoulder rotation |VLH|. If the beta angle = 45 degrees, |VLH|= 105 mph. And this speed is created practically exclusively by pronation and internal shoulder rotation. Tiw these motions are the most important.
Originally Posted by sennoc
So, here you have the real physics of tennis serve. Should I publish my account number now?
Anatoly Antipin - one of the most delicate tennis players in the world.