Photo Lesson: How to Hit the Twist Serve

One Frame After Contact

(C)2006 Jeff Cooper licensed to About.com, Inc.

• Here, one frame after contact, the wrist has finished delivering the last link in the kinetic chain in the form of racquet head speed, which has gone into a mixture of forward power and brushing up and across the ball to create spin.
• The pronation you can see in the wrist's position compared to the previous frame has occurred as a natural consequence of the large forces generating the swing.

• Introduction and Grip
• Knee Bend
• Elbow Up, Racquet Down, Body Arched
• Kinetic Chain Moving Into Shoulder
• One Frame Before Contact
• Point of Contact
• One Frame After Contact
• Beginning of Follow Through
• Following Through Initially to the Right
• Ball Clears Net Comfortably