Hip-Shoulder Separation (X-Factor)
The angle between the hips and shoulders during preparation creates elastic energy in the core. When the hips begin to open while the shoulders remain turned, the trunk stretches like a coiled spring. This stored elastic energy releases explosively at contact, adding power without muscular effort.
Related Concepts
- The Kinetic Chain in Tennis
- Open Stance Forehand
- Racquet Lag in Modern Tennis
- The Pelvic Snap
Source inspiration: tennisplayer.net teaching library (John Yandell, 2002-2022) — not verbatim, this is original synthesis