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 -9.1in · Δ VB -2.7in

Current: HB 0.1in / VB +4.7in Recommended: HB -9.0in / VB +2.0in

Diagnosis

Signal	Cause	Fix	Confidence
Stuff-to-Whiff Gap (Tunneling)0.93	Elite raw stuff but poor pitch tunneling — hitters read pitches early	Pair pitches with tighter release-point similarity and greater late movement divergenceClosing tunnel gap could add 14.0pp to whiff rate	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 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
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

Arsenal / metrics

Component	Usage	Velo	Whiff
SinkerSI	64%	94.1	7.7%
SliderSL	16%	87.0	0.0%
ChangeupCH	11%	87.7	0.0%
Four-Seam FastballFF	9%	94.6	50.0%