The 33 points Stance tracks, drawn as Stance draws them, and the bat in both handsThe side-on phone locked on the joints it is measuringPhones square of the pitch and down the pitch, ring lights, two floodlightsA right-hander drives a full ball outside off stump toward cover. The stance and backlift play at speed; the measured shot window runs from the top of the backlift, as the bat starts down, through contact to the finished pose, and plays 5× slower. The side-on phone, the angle Stance recommends, reads the angles at contact the way Stance does, on its 2D image: front knee 148° (braced is 140° or more), front elbow 152° (full extension is 150–180°), trunk tilt 23° (5–45°) and X-factor 14° (12° or more is good). These values are illustrative, chosen inside Stance's bands, and the skeleton is posed to measure exactly them. X-factor is a 2D proxy for hip–shoulder separation: it compares the tilt of the shoulder and hip lines in one image, so it changes with the camera. The timings follow Stretch and colleagues (1998): stride 0.68 m starting 0.58 s before impact, downswing from 0.36 s, front foot down 0.06 s before, bat about 78° from horizontal and about 11.8 m/s at impact. The 0.95 m bat is inside MCC Law 5's 96.5 cm limit; its handle length, the ball's speed and the follow-through's length are illustrative.
Stance Cricket™Stance Lab · Batting