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

Jacob Misiorowski

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

Cards
13
Modules
1
Live Δ
yes
Club Milwaukee Brewers 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 preseason4.03
ERA current pace1.83
ERA rolling p502.82
Observed weight55%
ERA
1.70 2.23 2.82 3.41 3.93
FIP
1.59 2.00 2.46 2.92 3.33
K%
30.4% 32.0% 33.7% 35.5% 37.0%
BB%
6.0% 6.8% 7.7% 8.6% 9.4%
Live percentile strip

Current traits vs projection tick

100th = best in MLB.

2026-06-01
Pitching · percentile strip
BB%7.1%
72 +20 vs proj
Barrel allowed3.3%
93 +46 vs proj
Fastball velo99.8
99
Hard-hit allowed34.6%
77
K%37.8%
99
Whiff%35.2%
98 +20 vs proj
xwOBA allowed0.236
98 +25 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+111
98
Rolling form chart

xwOBA allowed snapshot line

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

12 snapshots
Mithrandir Metrics ROLLING XWOBA LINE Parameterized Mithrandir chart rendered as SVG for templates and exports. season=2026 Rolling xwOBA allowed Misiorowski, Jacob · Live snapshot series; true 50/100 PA windows require PA-level logs LG AVG 0.314 2026-05-17: 0.2532026-05-19: 0.2532026-05-21: 0.2432026-05-23: 0.2432026-05-24: 0.2432026-05-25: 0.2432026-05-26: 0.2352026-05-28: 0.2352026-05-29: 0.2342026-05-30: 0.2342026-05-31: 0.2342026-06-01: 0.236 2026-05-17 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.

5Pitches 2026Season 62%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 Misiorowski, Jacob · Aggregate zone metrics; not pitch-by-pitch locations Edge: 37%37%Zone: 51%51%Whiff: 35%35%Called strike: 18%18%First pitch strike: 55%55%Hard hit allowed: 35%35% 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 Misiorowski, Jacob · 2026 arsenal snapshot 4-Seam Fastball: 62.5%Slider: 22.2%Curveball: 12.2%Changeup: 2.0%Cutter: 1.1% MIX FF 62%SL 22%CU 12%CH 2%FC 1% MITHRANDIR · CHARTS
Mithrandir Metrics PITCH MOVEMENT Parameterized Mithrandir chart rendered as SVG for templates and exports. Pitch Arsenal Misiorowski, Jacob · 2026 arsenal snapshot FF: HB -0.2, IVB 1.0FFSL: HB -0.0, IVB 2.0SLCU: HB 0.1, IVB 3.7CUCH: HB -1.3, IVB 2.2CHFC: HB 0.0, IVB 1.7FC horizontal break IVB MITHRANDIR · CHARTS
PitchUsagePitchesStuff+Status
FB 62.7% 680 112 qualified
SL 22.5% 244 112 qualified
CB 12.1% 131 97 limited sample
CH 1.5% 16 98 limited sample
FC 1.2% 13 110 limited sample
Method note

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

Reference layer

Current snapshot

Age24
Height6' 7"
Weight201 lb
Debut2025-06-12
Live layer

Delta / regression

ERA Δ-1.68
K% Δ+0.089

positive regression

Mithrandir coverage

Module shelf

ModuleCardsLatestSignal
Pitching132026-05-254-Seam Fastball played up through FF/SL tunnel quality
Projection links / recent games

Available detail

Pitcher Projections 202628.9% K | 3.51 ERAProjection
2026-04-14 vs TOR2 ER / 5 K5.1 IP
2026-04-07 @ BOS3 ER / 10 K5.1 IP
2026-04-01 vs TB2 ER / 7 K6.0 IP
2026-03-26 vs CWS1 ER / 11 K5.0 IP