Mithrandir Metrics
Player Chicago White Sox Refreshed Jun 2 06:00 AM ET
Player profile / Chicago White Sox

Brandon Eisert

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

Cards
0
Modules
0
Live Δ
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Club Chicago White Sox 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.

2026-06-02
ERA preseason4.37
ERA current pace5.00
ERA rolling p504.50
Observed weight21%
ERA
2.78 3.60 4.50 5.41 6.22
FIP
3.32 3.95 4.64 5.34 5.96
K%
17.6% 19.8% 22.2% 24.7% 26.9%
BB%
5.2% 6.5% 8.0% 9.5% 10.9%
Live percentile strip

Current traits vs projection tick

100th = best in MLB.

2026-06-02
Mithrandir+

Stuff+ and arsenal context

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

2026-06-02
Mithrandir Stuff+96
16
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.

5Pitches 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 Eisert, Brandon · Aggregate zone metrics; not pitch-by-pitch locations Edge: 36%36%Zone: 44%44%Whiff: 25%25%Called strike: 14%14%First pitch strike: 36%36%Hard hit allowed: 50%50% 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 Eisert, Brandon · 2026 arsenal snapshot 4-Seam Fastball: 38.8%Changeup: 28.6%Slider: 24.2%Sinker: 7.3%Sweeper: 1.1% MIX FF 39%CH 29%SL 24%SI 7%ST 1% MITHRANDIR · CHARTS
Mithrandir Metrics PITCH MOVEMENT Parameterized Mithrandir chart rendered as SVG for templates and exports. Pitch Arsenal Eisert, Brandon · 2026 arsenal snapshot FF: HB -0.1, IVB 1.6FFCH: HB -0.8, IVB 2.9CHSL: HB -0.2, IVB 2.9SLSI: HB 1.2, IVB 2.2SIST: HB -0.8, IVB 3.4ST horizontal break IVB MITHRANDIR · CHARTS
PitchUsagePitchesStuff+Status
FB 42.5% 88 100 limited sample
CH 27.1% 56 95 limited sample
SL 23.7% 49 100 limited sample
SI 6.8% 14 90 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' 2"
Weight210 lb
Debut2024-06-17
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 202623.4% K | 4.16 ERAProjection
2026-05-20 @ SEA0 ER / 1 K1.0 IP
2026-04-14 vs TB2 ER / 1 K1.1 IP
2026-04-12 @ KC2 ER / 1 K1.0 IP