Swing Analytics (Sportsbox-style positional metric).
What it measures
SportsBox Pelvis Sway @ IMP—hip lateral translator versus Address at Impact; read beside Chest Sway @ IMP.
Units: inches
Why it matters
Separates rotational delivery from hips sliding toward the ball when stacked with thrust and turn rows.
When the number looks wrong or noisy
Trail knee kick can imitate sway spikes—capture lower-body framing consistently.