Mithrandir Metrics
Player Milwaukee Brewers Refreshed Sep 27 06:00 AM ET
Player profile / Milwaukee Brewers

Jacob Misiorowski

P · Bats/Throws R/R · 6' 7", 201 lb · Age 24

Cards
26
Modules
1
Live Δ
yes
Club Milwaukee Brewers Position P Roster Current MLB team Status Healthy / active roster
Traditional line

Season by season

3D Pitch Lab Projections
WLERAGGSSVIPSOWHIP
2025534.361514066.0871.24
20261551.8629290169.12470.80
2 Seasons2082.5644430235.13340.93
At a glance

Season percentile report

The headline weighs outcome stats (xwOBA, barrels); each bar averages its full strip group below. 100 = best in MLB.

2026-09-27
96
Pitching
percentile
Pitching9 metrics
95
Arsenal6 metrics
69
Rolling projection

Preseason / current pace / Bayesian update

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

2026-09-27
ERA preseason4.03
ERA current pace1.86
ERA rolling p502.43
Observed weight74%
ERA
1.21 1.79 2.43 3.08 3.66
FIP
1.48 1.93 2.43 2.94 3.39
K%
32.8% 33.9% 35.1% 36.4% 37.5%
BB%
5.9% 6.5% 7.1% 7.7% 8.3%
Live percentile strip

Current traits vs projection tick

100th = best in MLB.

2026-09-27
Pitching · percentile strip
WHIP0.82
99
ERA1.86
97
BB%6.6%
84 +30 vs proj
K%37.4%
100
xwOBA allowed0.223
99 +21 vs proj
Barrel allowed3.9%
95 +52 vs proj
Fastball velo100.5
100
Hard-hit allowed33.6%
84
Whiff%34.3%
99 +17 vs proj
Mithrandir+

Stuff+ and arsenal context

How nasty this pitcher's stuff grades in our pitch-level model. Missing coverage is shown explicitly.

2026-09-27
Fastball Stuff+110
96
Mithrandir Stuff+110
98
Slider Stuff+111
97
Changeup Stuff+98
22
Curveball Stuff+100
22
Cutter Stuff+105
81
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 0.313 0.223 2026-09-13: 0.2252026-09-14: 0.2252026-09-18: 0.2242026-09-19: 0.2242026-09-20: 0.2242026-09-21: 0.2232026-09-22: 0.2232026-09-23: 0.2232026-09-24: 0.2232026-09-25: 0.2232026-09-26: 0.2232026-09-27: 0.223 2026-09-13 2026-09-27 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.

6Pitches 2026Season 63%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: 50%50%Whiff: 34%34%Called strike: 16%16%First pitch strike: 56%56%Hard hit allowed: 34%34% 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.

Watch the pitches in 3D →

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: 63.2%Cutter: 13.8%Slider: 11.6%Curveball: 10.0%Changeup: 1.3%Sinker: 0.1% FF63% · 101 mphprimary pitch FF 63%FC 14%SL 12%CU 10%CH 1%SI 0% MITHRANDIR · CHARTS
Mithrandir Metrics PITCH MOVEMENT Parameterized Mithrandir chart rendered as SVG for templates and exports. Pitch Arsenal Misiorowski, Jacob · 2026 arsenal snapshot 12″24″36″48″ 4-Seam Fastball: 63% usage, 2″ horizontal break, 12″ drop, 100.5 mphFF101 mphCutter: 14% usage, 0″ horizontal break, 22″ drop, 95.8 mphFC96 mphSlider: 12% usage, 1″ horizontal break, 30″ drop, 91.9 mphSL92 mphCurveball: 10% usage, 2″ horizontal break, 43″ drop, 87.9 mphCU88 mphChangeup: 1% usage, 14″ horizontal break, 27″ drop, 92.5 mphCH92 mphSinker: 0% usage, 5″ horizontal break, 15″ drop, 100.6 mphSI101 mph less drop ↑ more drop ↓ · horizontal break ↔ · dot size = usage · break incl. gravity MITHRANDIR · CHARTS
PitchUsagePitchesStuff+Status
FB 61.9% 1106 110 qualified
SL 19.3% 345 111 qualified
CB 9.7% 173 100 limited sample
FC 8.2% 146 105 limited sample
CH 0.9% 16 98 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-1.65
K% Δ+0.085

positive regression

Regression watch

Unlucky so far. Better days ahead.

0.5σ gap
wOBA-against (actual)0.235
xwOBA-against (deserved)0.223

Misiorowski’s wOBA-against sits at 0.235, but the quality of contact underneath says it should be 0.223 — a gap of 0.012, 0.5 standard deviations from the MLB norm over 173 IP. The results have been worse than the process deserves; as the sample grows, expect the numbers to climb back toward the underlying level.

Mithrandir coverage

Module shelf

ModuleCardsLatestSignal
Pitching262026-09-20Command and chase profile drove the outing
Projection links / recent games

Available detail

Pitcher Projections 202628.9% K | 3.51 ERAProjection
2026-08-15 @ LAD1 ER / 6 K6.0 IP
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