Optimization diagnostic / ATH
Jeffrey Springs
Jeffrey Springs's production (55) outpaces the tools grade (44) by 11 points. Primary finding: existing changeup is present, but its movement shape does not currently cover the desired arsenal-shape:-armside-drop window. Also flagged: Arsenal Gap: Gloveside Drop. Most actionable fix: reshape existing changeup to add arsenal shape: armside drop rather than developing a new pitch from scratch.
Data window 2026-08-17 / 2026-08-31Confidence HIGH
Optimization map
Arsenal shape map
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ride
armside
gloveside
Diagnosis
Fixable gaps
| Signal | Cause | Fix | Confidence |
|---|---|---|---|
| Arsenal Shape: Arsenal Shape: Armside Drop0.85 | Existing Changeup is present, but its movement shape does not currently cover the desired arsenal-shape:-armside-drop window. | Reshape existing Changeup to add arsenal shape: armside drop rather than developing a new pitch from scratch.Shape refinement would improve platoon coverage while preserving the existing usage signal. | HIGH |
| Arsenal Gap: Gloveside Drop0.60 | No vertical drop pitch (Curveball/Knuckle Curve) — hitters can ignore low zone | Develop a Curveball to cover the gloveside-drop regionFilling this gap would improve platoon coverage and arsenal depth | HIGH |
Arsenal / metrics
Underlying components
| Component | Usage | Velo | Whiff |
|---|---|---|---|
| 4-Seam FastballFF | 41% | 91.0 | 16.3% |
| ChangeupCH | 31% | 79.4 | 22.0% |
| SliderSL | 16% | 84.9 | 15.4% |
| CutterFC | 12% | 86.7 | 12.6% |
| SweeperST | 5% | 80.0 | 0.0% |