Mithrandir Metrics
Player Minnesota Twins Refreshed Jun 1 06:00 AM ET
Player profile / Minnesota Twins

Zebby Matthews

P profile with live context, projection links, and Mithrandir card history when available.

Cards
6
Modules
1
Live Δ
yes
Club Minnesota Twins Position P Roster Active Status Healthy / active roster
Rolling projection

Preseason / current pace / Bayesian update

Rolling bands shrink current-season signal toward the preseason prior until the sample earns more weight.

2026-06-01
ERA preseason4.41
ERA current pace2.37
ERA rolling p503.75
Observed weight32%
ERA
2.48 3.08 3.75 4.42 5.02
FIP
3.06 3.57 4.14 4.71 5.22
K%
18.2% 20.2% 22.4% 24.6% 26.6%
BB%
3.8% 4.6% 5.4% 6.2% 6.9%
Live percentile strip

Current traits vs projection tick

100th = best in MLB.

2026-06-01
Pitching · percentile strip
BB%3.5%
99 +24 vs proj
Barrel allowed11.9%
10 -36 vs proj
Fastball velo95.2
66
Hard-hit allowed35.7%
73
K%21.7%
47
Whiff%20.5%
29 -33 vs proj
xwOBA allowed0.276
81 +23 vs proj
Mithrandir+

Stuff+ and arsenal context

Stuff+ appears when the current pitch-event scoring artifact includes this pitcher; missing coverage is shown explicitly.

2026-06-01
Mithrandir Stuff+103
61
Rolling form chart

xwOBA allowed snapshot line

Live snapshot series; true 50/100 PA windows require PA-level logs

6 snapshots
Mithrandir Metrics ROLLING XWOBA LINE Parameterized Mithrandir chart rendered as SVG for templates and exports. season=2026 Rolling xwOBA allowed Matthews, Zebby · Live snapshot series; true 50/100 PA windows require PA-level logs LG AVG 0.314 2026-05-26: 0.2552026-05-28: 0.2552026-05-29: 0.2552026-05-30: 0.2552026-05-31: 0.2552026-06-01: 0.276 2026-05-26 2026-06-01 xwOBA allowed MITHRANDIR · CHARTS
Optimization map

Arsenal optimization map

Pitch-shape context from this pitcher’s current arsenal snapshot. Hover a pitch to inspect usage, movement, and bat-missing context.

7Pitches 2026Season 39%Top usage
ride armside gloveside +Arsenal gap +Shape contrast
Zone profile

Aggregate zone heatmap

Aggregate zone metrics from seasonal Statcast leaderboards.

Mithrandir Metrics ZONE HEATMAP Parameterized Mithrandir chart rendered as SVG for templates and exports. season=2026 Pitch Zone Profile Matthews, Zebby · Aggregate zone metrics; not pitch-by-pitch locations Edge: 37%37%Zone: 49%49%Whiff: 20%20%Called strike: 19%19%First pitch strike: 58%58%Hard hit allowed: 36%36% Dashed border = aggregate mixed-batter zone proxy MITHRANDIR · CHARTS
Pitch arsenal

Usage mix, movement map, and Stuff+ composition

2026 pitch-level arsenal aggregates; current season takes over after 100 tracked pitches across at least 2 pitch types. Descriptive pitch-type Stuff+ composition. Not a promoted predictive metric.

2026
Mithrandir Metrics PITCH ARSENAL DONUT Parameterized Mithrandir chart rendered as SVG for templates and exports. Pitch Arsenal Matthews, Zebby · 2026 arsenal snapshot 4-Seam Fastball: 39.0%Slider: 19.5%Curveball: 15.2%Changeup: 11.7%Cutter: 9.9%Sinker: 3.4% MIX FF 39%SL 20%CU 15%CH 12%FC 10%SI 3% MITHRANDIR · CHARTS
Mithrandir Metrics PITCH MOVEMENT Parameterized Mithrandir chart rendered as SVG for templates and exports. Pitch Arsenal Matthews, Zebby · 2026 arsenal snapshot FF: HB -0.1, IVB 1.2FFSL: HB 0.0, IVB 2.9SLCU: HB -0.0, IVB 4.4CUCH: HB -1.0, IVB 2.9CHFC: HB 0.0, IVB 2.1FCSI: HB 1.2, IVB 1.7SIFS: HB -0.0, IVB 2.6FS horizontal break IVB MITHRANDIR · CHARTS
PitchUsagePitchesStuff+Status
FB 39.9% 148 104 limited sample
SL 18.1% 67 102 limited sample
CB 17.3% 64 101 limited sample
CH 14.0% 52 108 limited sample
FC 8.6% 32 103 limited sample
SI 2.2% 8 103 limited sample
Method note

Renamed from the attempted Kirby Index after audit; true Kirby requires release-angle trajectory data.

Reference layer

Current snapshot

Age26
Height6' 5"
Weight225 lb
Debut2024-08-13
Live layer

Delta / regression

ERA Δ-2.05
K% Δ-0.016
Mithrandir coverage

Module shelf

ModuleCardsLatestSignal
Pitching62026-05-254-Seam Fastball played up through SL/CU tunnel quality
Projection links / recent games

Available detail

Pitcher Projections 202623.3% K | 4.42 ERAProjection