Short arm actions are not automatically broken.
Searched as "short arming baseball". Here is what the phrase actually means, what the video shows, and how a measured report ends the argument.
What it looks like
- Abbreviated arm swing behind the body
- Coaches split between leave it and fix it
- Velocity or comfort concerns raised at tryouts
What is actually happening
Plenty of successful arms are short in the back. The question is not the length of the arm action but whether the delivery sequences well and repeats: hips leading, trunk following, release window stable. Measure those and the short arm is either a harmless signature or a symptom, and you will know which before anyone rebuilds a young arm on a hunch.
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
Order first. If the chain fires in order, leave the arm action alone.
Two videos a month apart beat every opinion about an arm action.
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.