Knuckle CurveArsenal Shape: Gloveside Drop
Δ HB -3.3in · Δ VB -8.9in
Current: HB 0.3in / VB +0.9in
Recommended: HB -3.0in / VB -8.0in
Optimization diagnostic / SD
Germán Márquez
Germán Márquez's tools (43) outpace production (54) by -12 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 Shape: Gloveside Drop; Usage Underuse: Slider. Most actionable fix: reshape existing changeup to add arsenal shape: armside drop rather than developing a new pitch from scratch.
Data window 2026-07-01 / 2026-07-15Confidence HIGH
Optimization map
Arsenal shape map
Hover each pitch to inspect current usage, movement shape, and whiff context beside the written diagnosis.
View arsenal in 3D →
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)0.22 | 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: 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 Shape: Gloveside Drop0.60 | Existing Knuckle Curve is present, but its movement shape does not currently cover the desired gloveside-drop window. | Reshape existing Knuckle Curve 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 |
| Usage Underuse: Slider0.70 | Slider grades as the best pitch (whiff 43.5%, CSW 31.6%) but is only thrown 13.1% of the time | Increase Slider usage to at least league-average for that pitch typeUsage rebalancing is the simplest optimization with immediate impact | MEDIUM |
| Usage Overuse: Four-Seam Fastball0.60 | Four-Seam Fastball grades as the weakest pitch (whiff 4.9%, CSW 20.3%) but is thrown 40.3% of the time | Reduce Four-Seam Fastball usage in favor of higher-performing offeringsUsage rebalancing is the simplest optimization with immediate impact | MEDIUM |
Arsenal / metrics
Underlying components
| Component | Usage | Velo | Whiff |
|---|---|---|---|
| Four-Seam FastballFF | 40% | 95.8 | 4.9% |
| Knuckle CurveKC | 28% | 86.2 | 32.7% |
| SinkerSI | 19% | 95.2 | 10.3% |
| SliderSL | 13% | 88.0 | 43.5% |
| ChangeupCH | 4% | 88.1 | 0.0% |