Every report covers 8 age-adjusted mechanics, a written analysis, a prioritized drill plan, and an arm health summary — in plain English your son's coach can use at the next practice.
| Mechanic | Score | Status | Observation | |
|---|---|---|---|---|
Hip-to-Shoulder Separation Load and fire sequence |
8.7 |
Strength | Good hip drive and separation — consistent across all reps reviewed | |
Stride Length & Direction % of height, stride angle |
8.1 |
Strong | Stride direction is closed-to-neutral — ideal for this age | |
Glove-Side Control Pull-through & hip lock |
7.9 |
Strong | Glove tucks and drives well — observed consistently across reps | |
Arm Path & Angle Early, late, or inverted |
6.3 |
Needs Work | Arm gets slightly early at foot plant — common and very correctable at 12 | |
Release Point Consistency Frame-to-frame variance |
6.1 |
Needs Work | Release point drifts slightly across pitch types — will improve as arm path tightens | |
Front Leg Block Firmness at foot plant |
7.6 |
Strong | Front leg blocks well — present in every rep reviewed | |
Balance & Posture Head position, spine tilt |
8.3 |
Strong | Repeatable posture — head stays on a level plane through delivery | |
Follow-Through Decel & arm health risk |
8.0 |
Safe | Arm decelerates naturally through the finish — not diving forward — consistent across all reps |
This is a genuine strength. The hip-to-shoulder sequence fires in the right order — hips clear, then the shoulder follows, creating separation that transfers energy efficiently up the chain. At 12 years old, having this pattern locked in is a significant advantage. Most pitchers his age don't develop this naturally and have to relearn it in high school. Nothing to change here — reinforce it.
The arm gets into position slightly early — breaking before foot plant. When this happens, the elbow has to wait for the body to catch up, which creates a long arm action and puts extra stress on the UCL and shoulder. This is the most common mechanical issue we see in youth pitchers and it is very correctable at this age. The fix is a short-arm drill pattern that delays the break and keeps the arm in a tighter, more efficient path. See the drill plan below.
The glove-side pull-through is working well. He tucks the glove into the body at foot plant and drives through, which locks the front hip and helps power transfer. This is a coachable skill that a lot of pitchers miss — he does it naturally. Worth reinforcing at practice so it doesn't slip as velocity increases.
Your son has a strong pitching foundation. His hip-to-shoulder sequence, front leg block, and glove-side control are all working the way they should — and at 12, those are the hardest things to build. The one thing to address is his arm path. His arm is getting into throwing position a little early, which puts extra stress on the elbow and shoulder over time. This is very common at this age and extremely correctable — the drill plan above addresses it directly. No major overhaul needed. Focus on the arm path drill for 2–3 weeks and the release point will follow. AJ recommends sending a follow-up video in 4–6 weeks to track progress.
| Mechanic | Jun 2025 (Baseline) | Follow-Up |
|---|---|---|
| Hip-to-Shoulder Separation | 8.7 | — |
| Stride Length & Direction | 8.1 | — |
| Glove-Side Control | 7.9 | — |
| Arm Path & Angle | 6.3 | — |
| Release Point Consistency | 6.1 | — |
| Front Leg Block | 7.6 | — |
| Balance & Posture | 8.3 | — |
| Follow-Through | 8.0 | — |
Follow-up column completed after second review submission.
Every report is reviewed personally by AJ. Delivered within 48 hours. Written so any parent or coach can act on it immediately.
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