Mithrandir Metrics

Data window 2026-10-01 / 2026-10-15Confidence 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

Current shape against the recommended movement window. Animation starts when this section scrolls into view.

SliderArsenal Shape: Gloveside Sweep

Δ HB -6.3in · Δ VB +4.4in

Current: HB -2.7in / VB -2.4in Recommended: HB -9.0in / VB +2.0in

Diagnosis

Signal	Cause	Fix	Confidence
Arsenal Gap: Armside Drop0.85	No armside drop pitch (Changeup/Splitter) — platoon vulnerability vs opposite-hand hitters	Develop a Changeup to cover the armside-drop regionFilling this gap would improve platoon coverage and arsenal depth	HIGH
Arsenal Shape: Gloveside Sweep0.70	Existing Slider is present, but its movement shape does not currently cover the desired gloveside-sweep window.	Reshape existing Slider to add gloveside sweep rather than developing a new pitch from scratch.Shape refinement would improve platoon coverage while preserving the existing usage signal.	HIGH
Usage Underuse: Cutter0.70	Cutter grades as the best pitch (whiff 53.6%, CSW 23.8%) but is only thrown 19.8% of the time	Increase Cutter usage to at least league-average for that pitch typeUsage rebalancing is the simplest optimization with immediate impact	HIGH
Platoon Vulnerability0.80	Sweeper/slider-heavy arsenal with no armside offering — opposite-hand hitters can sit on the breaking ball	Develop an armside offering (changeup, splitter, or cutter) for opposite-hand matchupsClosing platoon gap typically worth 0.3-0.5 ERA improvement in full-season sample	HIGH

Arsenal / metrics

Component	Usage	Velo	Whiff
Four-Seam FastballFF	51%	94.6	34.3%
SliderSL	30%	83.5	33.9%
CutterFC	20%	89.3	53.6%