Mithrandir Metrics
2026-09-26T03:46:13.592611+00:00ok
Section IV / Lab / Experiments and follow-ups

A workshop, not a dashboard.

A directory for experiments and player diagnostics. The index stays navigational; deep strike-zone and percentile work belongs on the player profiles.

Rows
8
Pitchers
171
Hitters
97
Generated 2026-09-26T03:46:13.592611+00:00 Outings 326 Window 2026-09-11 / 2026-09-25
Optimization diagnostic report

Yunior Marte SF

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.

37Tools 39Production 57Score
ride armside gloveside +Arsenal Shape: Arsenal Shape: Armside Drop +Arsenal Gap: Gloveside Drop
Pregame Scouting Report / starter vs a full lineup
New · starter vs lineup

Scout the whole lineup.

Pick a starter and an opposing team and get the pregame report: the top threats, the easiest outs and exactly which pitch to attack each hitter with, and the sleeper the box score hides, a low-average bat who quietly grades up against this exact arsenal. Click any name for the full 3D dissection.

Open the Scouting Report →
Comp Constellation / similar hitters, and why
New · profile-shape similarity

Map a hitter's constellation.

Pick any hitter and see who is built like him: a star map where the closest profiles orbit nearest, sized and colored by how alike they really are, over six weighted feature groups from contact quality to sprint speed. Hover a star for why the two agree, click for the radial fingerprint overlay, and follow any comp to his card, projection, or swing lab. A hitter with no true twin gets an honest sparse sky, never a forced match.

Open the Comp Constellation →
Matchup Dissector / pitcher arsenal vs hitter holes
New · any pitcher vs any hitter

Dissect the confrontation.

Pick any pitcher and any hitter and break the at-bat down pitch by pitch in 3D: every pitch in the arsenal flying to the plate with real movement, how often it's thrown, its whiff rate, and exactly where the hitter ranks against that family. The out pitch surfaces itself, the matchup lean is priced against league average, and the holes light up in red.

Open the Matchup Dissector →
3D Pitch Lab / batter-POV tunnel viewer
New · interactive 3D

See the tunnel in three dimensions.

Every pitch type's real average flight, reconstructed from Statcast physics and rendered in true 3D from the batter's eye. Orbit the scene, snap to camera presets, and watch the paths share a tunnel before they break apart. Search any pitcher, overlay their best-breaking variants, and export a branded still.

Open the 3D Pitch Lab →
3D Swing Simulator / bat-tracking swing viewer
New · interactive 3D

Watch the swing in three dimensions.

Any hitter's real bat-tracking swing, reconstructed in 3D: an animated batter sweeping his true swing plane, with attack angle, swing-path tilt, attack direction and bat speed annotated against the MLB average. When our optimization model sees a flat path, the recommended swing overlays as a dashed target you can orbit around.

Open the 3D Swing Simulator →
Hitter optimization / swing and decision variants
Hitter optimization

Swing path and decision map

Geraldo Perdomo's production (90) outpaces the tools grade (81) by 9 points. Primary finding: excellent plate discipline but too passive on hittable pitches — letting strikes go by.

See full optimization →

See the swing in 3D →

Passive In-Zone Approach
Pass Attack Pass Attack Attack Attack Pass Attack Pass

Increase in-zone swing rate, especially on fastballs in favorable counts

Hittable takes / Expansion guardrail
Experiment runs / optimization candidates
01 Jack Dreyer pitcher / optimization read Score77.4 FixHIGH HIGH 02 Bubba Chandler pitcher / optimization read Score71.6 FixMEDIUM HIGH 03 Andrew Sears pitcher / optimization read Score65.3 FixMEDIUM HIGH 04 Ray Kerr pitcher / optimization read Score60.0 FixMEDIUM HIGH 05 Randy Arozarena hitter / optimization read Score46.9 FixHIGH MEDIUM 06 Osleivis Basabe hitter / optimization read Score37.5 FixHIGH MEDIUM
Pitcher diagnostics / tools-production gaps

Jack Dreyer

LAD · Arsenal Gap: Armside Drop

77Score 60Tools +13.1Gap

Jack Dreyer's tools grade (60) outpaces production (47) by 13 points. Primary diagnosis: no armside drop pitch (changeup/splitter) — platoon vulnerability vs opposite-hand hitters. Secondary signals: Arsenal Shape: Gloveside Sweep; Platoon Vulnerability. High-fixability path: develop a changeup to cover the armside-drop region.

Bubba Chandler

PIT · Stuff-to-Whiff Gap (Command)

72Score 48Tools +8.7Gap

Bubba Chandler's tools grade (48) outpaces production (39) by 9 points. Primary diagnosis: existing changeup is present, but its movement shape does not currently cover the desired armside-drop window.. Secondary signals: Arsenal Shape: Gloveside Drop; Usage Underuse: Curveball. High-fixability path: reshape existing changeup to add armside drop rather than developing a new pitch from scratch..

AS

Andrew Sears

DET · Arsenal Shape: Gloveside Sweep

65Score 52Tools +11.0Gap

Andrew Sears's tools grade (52) outpaces production (42) by 11 points. Primary diagnosis: existing slider is present, but its movement shape does not currently cover the desired gloveside-sweep window.. Secondary signals: Arsenal Gap: Gloveside Drop; Usage Underuse: Changeup. High-fixability path: increase changeup usage to at least league-average for that pitch type.

Ray Kerr

ATL · Stuff-to-Whiff Gap (Command)

60Score 30Tools -25.6Gap

Ray Kerr's production (55) outpaces the tools grade (30) by 26 points. Primary diagnosis: elite stuff tunnels well but pitches land in hittable zones. Secondary signals: Arsenal Gap: Armside Drop; Arsenal Gap: Gloveside Sweep. High-fixability path: develop a changeup to cover the armside-drop region.

Hitter optimization / approach and contact-shape reads

Randy Arozarena

SEA · Launch Angle Too Low

47Score 86Tools +16.0Gap

Randy Arozarena's tools (86) outpace production (70) by 16 points. Primary finding: expanding the zone too aggressively — generating weak contact and whiffs on pitcher's pitches. Also flagged: Launch Angle Too Low; Contact-Discipline Mismatch. Most actionable fix: elevate bat path to increase average launch angle toward 12-18° range.

OB

Osleivis Basabe

SF · Launch Angle Too Low

38Score 69Tools +15.6Gap

Osleivis Basabe's tools (69) outpace production (53) by 16 points. Primary finding: groundball-heavy approach with the raw power to drive the ball — leaving fly-ball damage on the table. Also flagged: Chase Rate Problem; Contact-Discipline Mismatch. Most actionable fix: elevate bat path to increase average launch angle toward 12-18° range.

Corey Seager

TEX · Launch Angle Too Low

37Score 81Tools +11.0Gap

Corey Seager's tools (81) outpace production (70) by 11 points. Primary finding: groundball-heavy approach with the raw power to drive the ball — leaving fly-ball damage on the table. Also flagged: Contact-Discipline Mismatch. Most actionable fix: elevate bat path to increase average launch angle toward 12-18° range.

BM

Braden Montgomery

CWS · Power Efficiency Gap

35Score 76Tools +9.8Gap

Braden Montgomery's tools (76) outpace production (66) by 10 points. Primary finding: groundball-heavy approach with the raw power to drive the ball — leaving fly-ball damage on the table. Also flagged: Power Efficiency Gap. Most actionable fix: elevate bat path to increase average launch angle toward 12-18° range.

Compact hitter ledger
H01 Randy Arozarena SEA / Launch Angle Too Low Score46.9 FixHIGH MEDIUM H02 Osleivis Basabe SF / Launch Angle Too Low Score37.5 FixHIGH MEDIUM H03 Corey Seager TEX / Launch Angle Too Low Score36.6 FixHIGH MEDIUM H04 Braden Montgomery CWS / Power Efficiency Gap Score35.3 FixMEDIUM LOW H05 Thomas Saggese STL / Launch Angle Too Low Score34.4 FixHIGH LOW H06 Spencer Jones NYY / Launch Angle Too High Score28.9 FixMEDIUM MEDIUM
Arsenal decomposition / descriptive pitch mix
PitcherPitch mixPrimary diagnosisScore
Yunior MarteSF SL 46% FF 37% FS 19% Arsenal Shape: Arsenal Shape: Armside Drop 57
Tarik SkubalLAD FF 49% CH 21% SL 17% SI 11% No primary gap 0
Bryce MillerSEA FF 42% FS 18% SL 18% SI 23% Stuff-to-Whiff Gap (Command) 25
Reid DetmersLAA FF 51% SL 33% CU 12% CH 8% Arsenal Shape: Arsenal Shape: Armside Drop 56
Casey MizeSD SL 27% FF 27% FS 25% SI 28% Arsenal Gap: Gloveside Drop 11
Brandon PfaadtAZ FF 33% SI 17% ST 26% CH 14% Arsenal Shape: Gloveside Drop 11
Jacob LopezATH FF 36% SL 31% FC 17% CH 13% Arsenal Gap: Gloveside Drop 50
Hunter BrownHOU SI 37% FF 26% FC 13% KC 8% Stuff-to-Whiff Gap (Command) 28
Scenario library

Scenario library, not a fake simulator.

These are saved diagnostic shapes from the current artifact. Slider-based what-if simulation remains parked until a real server-side simulator is wired.

Pitcher arsenal gapMissing movement quadrant plus usage flag. Review on pitcher diagnostics.
Hitter approach gapTools-production separation with discipline or launch-angle diagnosis.
True follow-upArchive checks whether the later window moved toward the original thesis.
Saved queries / reusable rooms