Mithrandir Metrics
Player Seattle Mariners Refreshed Jun 1 06:00 AM ET
Player profile / Seattle Mariners

Matt Brash

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

Cards
0
Modules
0
Live Δ
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Club Seattle Mariners 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 preseason3.39
ERA current pace0.00
ERA rolling p502.64
Observed weight22%
ERA
1.16 1.86 2.64 3.43 4.13
FIP
2.32 2.89 3.52 4.16 4.73
K%
20.8% 23.7% 26.8% 29.9% 32.7%
BB%
6.1% 7.8% 9.7% 11.6% 13.3%
Live percentile strip

Current traits vs projection tick

100th = best in MLB.

2026-06-01
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+108
93
Rolling form chart

xwOBA allowed snapshot line

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

0 snapshots
No chart yet

No Live State xwOBA snapshots are available for this player.

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.

4Pitches 2026Season 56%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 Brash, Matt · Aggregate zone metrics; not pitch-by-pitch locations Edge: 38%38%Zone: 42%42%Whiff: 32%32%Called strike: 18%18%First pitch strike: 49%49%Hard hit allowed: 40%40% 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 Brash, Matt · 2026 arsenal snapshot Slider: 55.9%Sinker: 22.8%Changeup: 15.4%4-Seam Fastball: 5.9% MIX SL 56%SI 23%CH 15%FF 6% MITHRANDIR · CHARTS
Mithrandir Metrics PITCH MOVEMENT Parameterized Mithrandir chart rendered as SVG for templates and exports. Pitch Arsenal Brash, Matt · 2026 arsenal snapshot SL: HB 0.1, IVB 3.1SLSI: HB 0.0, IVB 1.7SICH: HB -0.6, IVB 2.9CHFF: HB -0.0, IVB 1.3FF horizontal break IVB MITHRANDIR · CHARTS
PitchUsagePitchesStuff+Status
SL 57.5% 111 108 limited sample
SI 21.2% 41 110 limited sample
CH 13.5% 26 105 limited sample
FB 7.8% 15 101 limited sample
Method note

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

Reference layer

Current snapshot

Age28
Height6' 1"
Weight173 lb
Debut2022-04-12
Live layer

Delta / regression

No Live State delta is available for this profile yet.

Mithrandir coverage

Module shelf

ModuleCardsLatestSignal
No Mithrandir card history is available for this player yet.
Projection links / recent games

Available detail

Pitcher Projections 202628.1% K | 3.44 ERAProjection
2026-05-20 vs CWS0 ER / 2 K1.0 IP
2026-04-20 vs ATH0 ER / 1 K1.0 IP
2026-04-13 vs HOU0 ER / 0 K0.1 IP
2026-04-11 vs HOU0 ER / 0 K1.0 IP
2026-04-05 @ LAA0 ER / 1 K1.0 IP