Stay behind the ball, and snap late. Wrist snap timing and wrist position each carry 6 points of 100 — together more than the whole follow-through. Consistent release height and a stable seam at release are what turn a fast ball into a repeatable one. Four criteria, 18 points.
What each band looks like
Wrist Snap Timing (Late Release)
6 of 100 · filmed side-on
Looks right
Wrist clearly stays cocked through the swing, visible snap only in the last frame or two before the ball leaves the hand.
Can manage
A somewhat early or unclear release point.
Needs attention
Wrist visibly uncocks/releases early in the arm swing, well before the arm nears release position.
Wrist Behind the Ball at Release
6 of 100 · filmed side-on
Looks right
Wrist clearly behind the ball through release.
Can manage
A partial roll.
Needs attention
Wrist rolling over/collapsing early, ball pushed rather than driven.
Release Height Consistency
3 of 100 · filmed side-on
Looks right
Release height consistent across deliveries.
Can manage
Some variation.
Needs attention
Release point varying significantly ball to ball.
Seam Position at Release
3 of 100 · filmed behind-on
Looks right
Seam upright, perpendicular to the ground.
Can manage
Seam slightly tilted.
Needs attention
Seam scrambled or flat.
These are the criteria as amp scores them. Reading your own footage against them is free and always will be — what amp adds is doing it the same way every week, so the change between one session and the next is a number rather than an impression. Apply for the pilot.