Самый простой способ освоить подачу с обратным боковым вращением–не расслабляйся, держи тело жёстким

00:31 The Correct Serve Form – Elbow, Grip, and Structure 02:54 Stiffness vs Relaxation – How to Find Power 04:47 Serve Demonstrations and Key Variations Become a member of this channel to enjoy the following benefits： watch 10videos in advance，and 30 Fangbo tuition videos    / @kakaluser