CurveballArsenal Shape: Gloveside Drop
Δ HB -8.2in · Δ VB -0.3in
Current: HB 5.2in / VB -7.7in
Recommended: HB -3.0in / VB -8.0in
Optimization diagnostic / LAD
Emmet Sheehan
Emmet Sheehan's tools (56) outpace production (66) by -9 points. Primary finding: existing curveball is present, but its movement shape does not currently cover the desired gloveside-drop window.
Data window 2026-07-01 / 2026-07-15Confidence MEDIUM
Optimization map
Arsenal shape map
Hover each pitch to inspect current usage, movement shape, and whiff context beside the written diagnosis.
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ride
armside
gloveside
Movement reshape
Pitch movement dual-view
Current shape against the recommended movement window. Animation starts when this section scrolls into view.
Diagnosis
Fixable gaps
| Signal | Cause | Fix | Confidence |
|---|---|---|---|
| Stuff-to-Whiff Gap (Command)0.06 | Elite stuff tunnels well but pitches land in hittable zones | Reduce heart-of-zone pitches; increase edge and chase attemptsBetter location could push whiff rate toward 24%+ | MEDIUM |
| Arsenal Shape: Gloveside Drop0.60 | Existing Curveball is present, but its movement shape does not currently cover the desired gloveside-drop window. | Reshape existing Curveball to add gloveside drop rather than developing a new pitch from scratch.Shape refinement would improve platoon coverage while preserving the existing usage signal. | HIGH |
Arsenal / metrics
Underlying components
| Component | Usage | Velo | Whiff |
|---|---|---|---|
| Four-Seam FastballFF | 39% | 95.0 | 20.6% |
| SliderSL | 28% | 86.7 | 38.1% |
| ChangeupCH | 22% | 86.4 | 12.0% |
| CurveballCU | 12% | 79.3 | 17.4% |