Measuring Speed and Spin in Your Game

Dominic Thiem: averaging about 3200rpms on his forehand. In the last issue we presented a comprehensive table on the levels of spin for groundstrokes  in pro tennis—as well as some averages on ball speed. (Click Here.)  This was all based on data recorded by shot spot. One question I got repeatedly after that article was how does this apply to my game?  How do I calculate my own speed and spin levels? The answer is you don't need shot spot.  Previously we published an article on how to use a pocket radar gun to measure ball speed and how improved technique can increase shot velocity. (Click Here.) And you don't need shot spot for spin measurements either.  All you need is a compact high speed camera or a smart phone with a super slow motion setting that films at 240frames a second and also has a high speed shutter.    The pocket radar gun, tested for accuracy against tour measurements. And you need to understand how to use a simple equation.  I got a B in high school algebra but I did learn how to solve a one variable equation.   That's all it takes. I've used this equation going back to...