У вашего броузера проблема в совместимости с HTML5
Do you struggle with your second serve?
Developing a great kick second serve could be a total game-changer for you!
In this video OTI instructor Gregg le Sueur shows you two kick serve fundamentals that are critical if you want a great kick serve.
Learn how to master the all-important left to right swing path and how to position your body effectively for the quick serve.