Your arm slot is a number. So is how much it wanders.
Searched as "pitching arm slots". Here is what the phrase actually means, what the video shows, and how a measured report ends the argument.
What it looks like
- Coaches argue over-the-top versus three-quarter
- Misses cluster high to the arm side
- The slot looks different every video you take
What is actually happening
Arm slot is the angle of the throwing arm at release, and release height is where the ball actually leaves. Neither is good or bad on its own; pitchers succeed from every slot. What matters is consistency, because a release window that wanders forces the ball to start from a different place every pitch. We measure both on every delivery and mark them as estimates when a single camera limits precision, because honesty beats a fake decimal.
What we measure to find it
Every measurement comes from computer vision body tracking on one phone video, 33 landmarks on every frame, the same class of kinematic analysis professional organizations run on their players. Estimates are labeled EST, and no ball speed numbers are invented.
Drills that help
Slow deliveries a glove-length from a net or wall groove the one slot the space allows.
Same angle, same distance, every session. Slot conversations end when the trend line exists.
Drills are constraints, not lectures: set the task and let the player's body solve it. They work best aimed at the measured leak, which is the point of measuring first.
Stop guessing. Measure it.
Upload one video and get a coach signed diagnosis of what is actually leaking, within 24 hours. If we cannot read your video, you do not pay.
- A 7 page report: annotated frames, the measurements above, the likely cause, your tracking video.
- Within 24 hours of a completed order.
- Screened before payment. Signed by Coach Joel A. On time, or we make it right.
- $99, one time. Nothing else to buy.