How to Improve Rotation for BIGGER Serves | Tennis Lesson (Part 1 of 2)
Tennis Serve Drills Grab your FREE Serve Action Plan here: http://www.serveactionplan.com/ Want a BIGGER serve? You'll need to use the bigger parts of your body. Here's how your shoulders, torso and legs all work together to create HUGE serve power, and how you can start working them in the next

