Spine Tilt
Also known as: secondary tilt, side tilt
Spine tilt at address is the slight away-from-target lean of the spine. This means especially with a driver. This means that promotes a positive attack angle and lets the trail shoulder drop below the lead shoulder.
Spine tilt in golf refers to the angle of the spine relative to vertical during setup and throughout the swing. Two distinct types of spine tilt are important. This means side tilt (also called secondary tilt or lateral tilt). This means the spine tilting away from the target. As a result, the trail shoulder is lower than the lead shoulder at address and through impact. This means and forward tilt (the bending toward the ball from the hips that creates the athletic golf posture). Each type of tilt serves a different function and creates different impact conditions.
Side spine tilt (away from the target) is important primarily because it allows the shoulder turn to work correctly relative to the golf ball. When the golfer is tilted away from the target, the shoulder plane tilts to match. This enables the club to approach the ball from inside the target line on a natural arc rather than being forced across it. Tour pro players typically show 3–6° of side tilt (trail shoulder below lead shoulder) at address. This tilt increases to 8–15° at impact as the body unwinds. A golfer with insufficient side tilt at impact (too level or reversed, with lead shoulder lower) tends to hit pulls and over-the-top shots.
Forward tilt (hip hinge) is the primary posture tilt and creates the spine angle that the shoulder turn rotates around. Optimal forward tilt places the spine between 25–45° from vertical depending on club length — more upright for longer clubs, more tilted for shorter clubs. Maintaining this forward tilt throughout the swing is crucial. This means standing up ("losing spine angle") removes the tilt that the shoulder plane is based on. This requires compensation in the downswing to find the ball.
For a quick side tilt check at address. This means grip the club, set up to the ball, and look at your shoulders. This means your trail shoulder should be clearly lower than your lead shoulder by about the width of two fingers. If they appear level, your setup side tilt is insufficient and will make inside-out delivery more difficult.
Film your swing from the down-the-line angle and compare your spine angle at address to your spine angle at impact. This means draw a line through your spine in both frames. If the line is steeper (you are standing up) or shallower (you are tilting further forward) at impact than at address, your swing center has moved and you are hitting moving-target golf. This is inherently less consistent than maintaining your address spine angle through impact.
Example
At driver address the right shoulder sits noticeably lower than the left. The spine leans slightly away from the target. This means the setup that enables a + 3° attack angle.
How it shows up on video
From a face-on camera angle, side spine tilt is visible at address and impact as the difference in height between the trail and lead shoulders. This means the trail shoulder should be visibly lower. Insufficient side tilt shows the shoulders about level; a reverse tilt (lead shoulder lower) is a fault that promotes pulls and over-the-top paths. Forward tilt (hip hinge) is most clearly visible from a down-the-line angle, where the amount of forward bend from the hips toward the ball is directly observable. Loss of forward tilt during the swing (standing up) is also visible from down-the-line as the golfer straightening up through impact.
Common mistakes
- Tilting the entire spine toward the trail side (lateral bend rather than side tilt). This means leaning the whole body toward the trail side at address is different from tilting within the spine. The golf posture should maintain a centered head position while the right shoulder is lower due to grip and setup geometry.
- Losing forward tilt through impact (early extension). This means standing up or thrusting the hips toward the ball removes the forward spine tilt and changes the swing plane, typically producing thin shots, blocks, or flips as compensations.
- Confusing spine tilt with spine angle — the forward tilt (spine angle) and side tilt (secondary tilt) are two separate tilts in two separate planes. Fixing one does not on its own fix the other.
- Overemphasizing spine tilt without checking posture. This means excessive side tilt that curves the spine (C-posture) or excessive forward tilt that creates a hunched upper back reduces rotation range and creates injury risk. Tilt should be achieved with a straight spine, not a curved one.
In SwingVantage Motion Lab
SwingVantage observes spine tilt from face-on video (side tilt, visible as shoulder height differential) and from down-the-line video (forward tilt, visible as the degree of hip hinge from address through impact). The system can flag insufficient side tilt at impact and loss of forward tilt (early extension) with confidence labels based on the clarity of the golfer's body position in available video.
Related terms
- Attack AngleAttack angle is the vertical direction the clubhead is moving at impact. Negative means hitting down on the ball; positive means hitting up.
- Ball PositionBall position is where the ball sits in your stance — from the front foot for a driver to the center for short irons. It directly controls the low point and attack angle.
- PosturePosture in golf is the spine angle at address. This means bending forward from the hips with a straight back. As a result, the arms hang freely under the shoulders and the body can rotate athletically.
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