CurveballArsenal Shape: Gloveside Drop
Δ HB -9.0in · Δ VB +2.0in
Current: HB 6.0in / VB -10.0in
Recommended: HB -3.0in / VB -8.0in
Optimization diagnostic / COL
Tomoyuki Sugano
Tomoyuki Sugano's tools (41) outpace production (50) by -9 points. Primary finding: existing curveball is present, but its movement shape does not currently cover the desired gloveside-drop window.
Data window 2026-05-17 / 2026-05-31Confidence MEDIUM
Optimization map
Arsenal shape map
Hover each pitch to inspect current usage, movement shape, and whiff context beside the written diagnosis.
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 | 30% | 92.6 | 0.0% |
| Split-FingerFS | 17% | 87.4 | 19.0% |
| SliderSL | 14% | 85.5 | 9.3% |
| 4-Seam FastballFF | 14% | 92.6 | 21.0% |
| CutterFC | 15% | 89.2 | 16.4% |
| CurveballCU | 8% | 80.4 | 13.4% |
| SweeperST | 8% | 83.5 | 0.0% |