Separation
Also known as: differential, body separation
Separation in the golf swing is when body segments rotate at different rates at different times — most importantly when the hips lead the shoulders at the start of the downswing, creating torque.
The key separation moment is the transition: hips begin rotating toward the target while the shoulders are still completing (or even still at the top of) the backswing. This differential in rotation rates is the stretch that snaps the torso and arm into acceleration — the same mechanism elite batters and pitchers use. "Separating" earlier and by a larger margin produces more club speed, which is why lower-body fitness (glute and hip power) directly translates to more speed without a swing change.
Example
In slow motion, a tour player's hips are 30° open while the shoulders are still 70° away from the target — a 100° separation gap at the start of the downswing.
Related terms
- X-FactorThe X-factor is the measured angle between the shoulder and hip turn at the top of the backswing. A large X-factor — typically 40–55° — correlates with higher club speed among tour professionals.
- Hip–Shoulder SeparationHip–shoulder separation is the angular gap between the hips and shoulders at the start of the downswing. A larger, well-timed gap stretches the core and releases into club speed.
- Kinematic SequenceThe kinematic sequence is the order in which body segments accelerate and decelerate during the downswing: pelvis → torso → lead arm → clubhead. Each segment slingshots the next for maximum speed.
- TransitionThe transition is the moment the swing changes direction from backswing to downswing. How the body initiates this moment determines sequencing, lag, and the resulting club path.
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