Paul Roetert of the Managing Director of the United States Tennis Association’s Player Development Program describes serve’s ground up technique checklist in the video clip below.
a) stance: pinpoint or platform
b) grip: continental
c ) knee flexion and extension
d) hip rotation, trunk rotation, separation of hip rotation and trunk rotation
e) internal rotation of shoulder: three different planes of motion: twisting, cart wheeling (shoulder over shoulder), somersaulting
f) forearm pronation
g) follow through
contributions to racket speed at impact
• Leg drive 10%
• Trunk flexion 20%
• Internal rotation 30-40%
• Hand flexion 30%