Mithrandir Metrics
Player Milwaukee Brewers Refreshed Jun 1 06:00 AM ET
Player profile / Milwaukee Brewers

Angel Zerpa

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

Cards
0
Modules
0
Live Δ
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Club Milwaukee Brewers Position P Roster Injured 60-Day Status IL-60
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 preseason4.06
ERA current pace6.39
ERA rolling p504.53
Observed weight20%
ERA
3.09 3.77 4.53 5.28 5.96
FIP
3.43 3.84 4.29 4.75 5.15
K%
16.1% 18.3% 20.8% 23.3% 25.5%
BB%
6.2% 7.3% 8.5% 9.7% 10.8%
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+106
81
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 67%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 Zerpa, Angel · Aggregate zone metrics; not pitch-by-pitch locations Edge: 32%32%Zone: 53%53%Whiff: 14%14%Called strike: 22%22%First pitch strike: 57%57%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 Zerpa, Angel · 2026 arsenal snapshot Sinker: 66.8%Slider: 20.3%Changeup: 6.9%4-Seam Fastball: 6.0% MIX SI 67%SL 20%CH 7%FF 6% MITHRANDIR · CHARTS
Mithrandir Metrics PITCH MOVEMENT Parameterized Mithrandir chart rendered as SVG for templates and exports. Pitch Arsenal Zerpa, Angel · 2026 arsenal snapshot SI: HB -0.5, IVB 2.2SISL: HB 0.1, IVB 3.2SLCH: HB -1.2, IVB 2.3CHFF: HB -0.2, IVB 1.6FF horizontal break IVB MITHRANDIR · CHARTS
PitchUsagePitchesStuff+Status
SI 68.1% 147 106 limited sample
SL 20.8% 45 97 limited sample
CH 6.0% 13 98 limited sample
FB 5.1% 11 99 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' 0"
Weight237 lb
Debut2021-09-30
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 202623.0% K | 4.16 ERAProjection
2026-04-17 @ MIA1 ER / 1 K1.0 IP
2026-04-14 vs TOR0 ER / 1 K1.0 IP
2026-04-12 vs WSH4 ER / 0 K0.2 IP
2026-04-06 @ BOS1 ER / 0 K1.0 IP
2026-04-05 @ KC0 ER / 1 K1.2 IP