Optimization diagnostic / ATH
Jacob Lopez
Jacob Lopez's production (43) outpaces the tools grade (30) by 13 points. Primary finding: changeup grades as the best pitch (whiff 51.6%, csw 30.1%) but is only thrown 12.6% of the time. Also flagged: Arsenal Gap: Gloveside Drop; Usage Overuse: Four-Seam Fastball. Most actionable fix: increase changeup usage to at least league-average for that pitch type.
Data window 2026-09-11 / 2026-09-25Confidence HIGH
Optimization map
Arsenal shape map
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gloveside
Diagnosis
Fixable gaps
| Signal | Cause | Fix | Confidence |
|---|---|---|---|
| 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 |
| Usage Underuse: Changeup0.70 | Changeup grades as the best pitch (whiff 51.6%, CSW 30.1%) but is only thrown 12.6% of the time | Increase Changeup usage to at least league-average for that pitch typeUsage rebalancing is the simplest optimization with immediate impact | HIGH |
| Usage Overuse: Four-Seam Fastball0.60 | Four-Seam Fastball grades as the weakest pitch (whiff 6.7%, CSW 23.4%) but is thrown 36.4% of the time | Reduce Four-Seam Fastball usage in favor of higher-performing offeringsUsage rebalancing is the simplest optimization with immediate impact | HIGH |
Arsenal / metrics
Underlying components
| Component | Usage | Velo | Whiff |
|---|---|---|---|
| Four-Seam FastballFF | 36% | 90.1 | 6.7% |
| SliderSL | 31% | 75.5 | 18.0% |
| CutterFC | 17% | 86.2 | 9.8% |
| ChangeupCH | 13% | 81.7 | 51.6% |