Optimization diagnostic / SF
Yunior Marte
Yunior Marte's production (39) outpaces the tools grade (37) by 2 points. Primary finding: existing splitter is present, but its movement shape does not currently cover the desired arsenal-shape:-armside-drop window. Also flagged: Arsenal Gap: Gloveside Drop; Usage Underuse: Splitter. Most actionable fix: reshape existing splitter to add arsenal shape: armside drop rather than developing a new pitch from scratch.
Data window 2026-09-11 / 2026-09-25Confidence HIGH
Optimization map
Arsenal shape map
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ride
armside
gloveside
Diagnosis
Fixable gaps
| Signal | Cause | Fix | Confidence |
|---|---|---|---|
| Arsenal Shape: Arsenal Shape: Armside Drop0.85 | Existing Splitter is present, but its movement shape does not currently cover the desired arsenal-shape:-armside-drop window. | Reshape existing Splitter 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 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: Splitter0.70 | Splitter grades as the best pitch (whiff 48.3%, CSW 20.6%) but is only thrown 18.7% of the time | Increase Splitter usage to at least league-average for that pitch typeUsage rebalancing is the simplest optimization with immediate impact | HIGH |
Arsenal / metrics
Underlying components
| Component | Usage | Velo | Whiff |
|---|---|---|---|
| SliderSL | 46% | 85.6 | 15.0% |
| Four-Seam FastballFF | 37% | 92.6 | 8.6% |
| SplitterFS | 19% | 83.0 | 48.3% |