CurveballArsenal Shape: Gloveside Drop
Δ HB -5.8in · Δ VB +0.2in
Current: HB 2.8in / VB -8.2in
Recommended: HB -3.0in / VB -8.0in
Optimization diagnostic / HOU
Ethan Pecko
Ethan Pecko's production (53) outpaces the tools grade (40) by 13 points. Primary finding: existing curveball is present, but its movement shape does not currently cover the desired gloveside-drop window.
Data window 2026-08-17 / 2026-08-31Confidence 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 |
|---|---|---|---|
| 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 |
|---|---|---|---|
| SinkerSI | 28% | 92.9 | 21.3% |
| Four-Seam FastballFF | 24% | 93.6 | 25.8% |
| SweeperST | 28% | 83.2 | 43.1% |
| CutterFC | 18% | 90.0 | 18.6% |
| CurveballCU | 12% | 81.8 | 23.7% |
| ChangeupCH | 6% | 87.0 | 0.0% |