Shoulder Over Shoulder Serve Move And Why You Need It

In order to generate the maximum speed of the racquet head in a tennis serve, we need to use the principle of "transfer of momentum" rather than the principle of "pushing" to generate force.

The shoulder over shoulder serve technique teaches you to decelerate your body in order for the arm to accelerate which is what most tennis players find very unnatural and very counter intuitive.

The video explains the drills but for more detailed information about the shoulder over shoulder serve move.