Advanced BioSwing Dynamics Screening

The Deep-Dive Screen

Six advanced screens for a complete biomechanical profile.
Complete The Blueprint first. This adds the full picture.

⚠️ Requires completed Blueprint Screen as prerequisite

Player

Identify Player

Player Name

Blueprint Session Date — optional

Screen 5 — Pelvic Pivot Axis

Pelvic Pivot Axis Test

How to test: Player takes address posture. Place a club shaft across their hips horizontally. Ask them to make a backswing pivot — observe which direction the pelvis rotates around and which end of the shaft rises. Identifies the dominant pivot axis.

⬅️

Left-Axis Pivot

Pelvis rotates around the lead leg. Trail end of shaft rises. More stacked pivot — weight stays center to lead side through backswing.

➡️

Right-Axis Pivot

Pelvis rotates around the trail leg. Lead end of shaft rises. Weight loads into trail side — classic weight shift pattern.

↔️

Dual-Axis Pivot

Pelvis rotates evenly — neither end of shaft rises significantly. Balanced rotation around the centre. Most neutral pivot pattern.

Screen 6 — Foot Pressure Preference

Foot Pressure Preference

How to test: Player stands in address posture, eyes closed. Ask them where they feel the most pressure in both feet naturally — heel, middle, or ball/toe. Observe any visible weight shift. Also note which feels more comfortable when you manually press their shoulder down into each position.

👣

Heel Loading

Pressure naturally in the heels. Promotes a more rotational, centred pivot. Common in stacked and front-post patterns.

⚖️

Mid-Foot Loading

Pressure balanced through the arch. Neutral ground reaction — adaptable to most pivot styles. Most common result.

🦶

Toe / Ball Loading

Pressure toward the ball of the foot. Promotes more lateral shift and weight transfer. Common in right-axis pivot patterns.

Screen 7 — Hip Mobility

Hip Mobility Screen

How to test: Player stands upright. Test internal rotation of each hip — trail hip internal rotation determines how much the pelvis can clear on the downswing. Test external rotation of the lead hip — determines backswing pivot depth. Compare range of motion: restricted, normal, or free.

🔒

Restricted Hip Mobility

Limited internal/external rotation in one or both hips. Requires compensations in pivot and backswing depth. Shorter backswing recommended.

✅

Normal Hip Mobility

Adequate rotation in both hips for full pivot. No compensations required. Standard coaching applies for this archetype.

🔓

Free Hip Mobility

Exceptional rotation range. Full backswing depth available. Can access deeper trail hip load and wider pivot arc without restriction.

Screen 8 — Pelvic Tilt / Spine Angle

Pelvic Tilt & Spine Angle

How to test: Observe the player's natural standing posture from the side. Check the angle of the pelvis — anterior tilt (butt out, curve in lower back), neutral, or posterior tilt (flat or tucked under). This determines their natural spine angle at address and whether they trend toward rotation or side bend in the swing.

⬆️

Anterior Tilt — Rotation tendency

Pelvis tilts forward, lower back curves in. Promotes more rotation in the swing, less side bend. Natural setup: more bend from the hips, flatter spine angle.

➡️

Neutral Tilt — Balanced tendency

Pelvis in neutral position. Balanced rotation and side bend capacity. Most adaptable spine angle. Standard setup applies.

⬇️

Posterior Tilt — Side bend tendency

Pelvis tilts back, lower back flattens. Promotes more side bend in the swing, less rotation. Natural setup: more upright posture, steeper spine angle.

Screen 10 — Post Style

Post Style

How to test: Observe where the player naturally anchors their pressure and rotates around through impact. Ask them to make a slow-motion swing and hold the finish — observe which leg is bearing weight and where the axis of rotation sits. Can also be identified from pivot axis test combined with foot pressure result.

🏹

Front Post

Rotates around the lead leg through impact. Lead leg straightens and anchors early. More stacked pivot — less lateral movement. Classic Stack & Tilt tendency.

⚖️

Mid Post

Rotates around the centre of the body. Weight transfers smoothly without a dominant anchor leg. Most balanced pressure pattern.

🔄

Rear Post

Rotates around the trail leg — stays back through impact. Common in pivot-and-release and hands-and-arms patterns. Requires matching delivery to avoid stuck positions.

Screen 11 — Torque System

Torque System

How to test: Measure the player's natural separation capacity between the ribcage and pelvis. Ask the player to hold their hips still and rotate only the ribcage as far as possible — and vice versa. The difference between the two reveals the available torque. High separation = more X-factor potential. Low separation = more unified turn.

💥

High Torque — High separation

Significant ribcage-pelvis separation available. High X-factor potential. Can generate power from rotational stretch. Needs matching pivot and timing cues.

🔄

Mid Torque — Moderate separation

Balanced separation capacity. Power comes from combination of rotation and speed — not extreme X-factor. Most common result. Standard pivot cues apply.

🤝

Low Torque — Unified turn

Ribcage and pelvis turn together as one unit. Limited X-factor — power comes from speed of unified rotation, not stretch. Shorter, more compact backswing is natural.

Coach Notes

Additional Observations

Notes — optional

Deep-Dive Screen JSON