Swing Analytics (Sportsbox-style positional metric).
What it measures
SportsBox Club Head Thrust @ IMP—clubhead depth translator along the calibrated depth ray versus Address at Impact.
Units: inches
Why it matters
Adds club-side depth QA beside pelvis/chest IMP thrust stacks for compression + low-point triage.
When the number looks wrong or noisy
Setup ball-origin mismatch widens residuals—mirror ball placement in notes.