Mithrandir Metrics
Player Milwaukee Brewers Refreshed Jul 17 06:00 AM ET
Player profile / Milwaukee Brewers

Jacob Misiorowski

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

Cards
16
Modules
1
Live Δ
yes
Club Milwaukee Brewers Position P Roster Active Status Healthy / active roster
Traditional line

Season by season

3D Pitch Lab Projections
WLERAGGSSVIPSOWHIP
2025534.361514066.0871.24
20261041.6218180111.01670.76
2 Seasons1572.6433320177.02540.94
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.

2026-07-17
95
Pitching
percentile
Pitching9 metrics
94
Arsenal6 metrics
65
Rolling projection

Preseason / current pace / Bayesian update

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

2026-07-17
ERA preseason4.03
ERA current pace1.62
ERA rolling p502.47
Observed weight65%
ERA
1.31 1.86 2.47 3.08 3.62
FIP
1.57 2.00 2.47 2.94 3.37
K%
32.2% 33.5% 35.0% 36.5% 37.8%
BB%
5.8% 6.5% 7.2% 8.0% 8.6%
Live percentile strip

Current traits vs projection tick

100th = best in MLB.

2026-07-17
Pitching · percentile strip
WHIP0.78
99
ERA1.62
98
BB%6.5%
82 +30 vs proj
K%38.4%
100
xwOBA allowed0.224
99 +25 vs proj
Barrel allowed3.4%
95 +49 vs proj
Fastball velo100.4
100
Hard-hit allowed34.8%
77
Whiff%34.2%
99 +19 vs proj
Mithrandir+

Stuff+ and arsenal context

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

2026-07-17
Fastball Stuff+112
97
Mithrandir Stuff+111
99
Slider Stuff+112
97
Changeup Stuff+98
21
Curveball Stuff+99
9
Cutter Stuff+103
65
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 0.224 2026-07-06: 0.2262026-07-07: 0.2262026-07-08: 0.2262026-07-09: 0.2242026-07-10: 0.2242026-07-11: 0.2242026-07-12: 0.2242026-07-13: 0.2242026-07-14: 0.2242026-07-15: 0.2242026-07-16: 0.2242026-07-17: 0.224 2026-07-06 2026-07-17 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 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: 51%51%Whiff: 34%34%Called strike: 17%17%First pitch strike: 56%56%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.

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: 62.9%Cutter: 12.9%Curveball: 11.3%Slider: 10.8%Changeup: 2.0% FF63% · 100 mphprimary pitch FF 63%FC 13%CU 11%SL 11%CH 2% 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, 100.4 mphFF100 mphCutter: 13% usage, 0″ horizontal break, 22″ drop, 96.0 mphFC96 mphCurveball: 11% usage, 2″ horizontal break, 44″ drop, 87.8 mphCU88 mphSlider: 11% usage, 1″ horizontal break, 28″ drop, 92.6 mphSL93 mphChangeup: 2% usage, 14″ horizontal break, 27″ drop, 92.5 mphCH92 mph less drop ↑ more drop ↓ · horizontal break ↔ · dot size = usage · break incl. gravity MITHRANDIR · CHARTS
PitchUsagePitchesStuff+Status
FB 62.5% 744 112 qualified
SL 21.2% 252 112 qualified
CB 11.3% 134 99 limited sample
FC 3.8% 45 103 limited sample
CH 1.3% 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-1.89
K% Δ+0.095

positive regression

Regression watch

Unlucky so far. Better days ahead.

0.3σ gap
wOBA-against (actual)0.233
xwOBA-against (deserved)0.224

Misiorowski’s wOBA-against sits at 0.233, but the quality of contact underneath says it should be 0.224 — a gap of 0.009, 0.3 standard deviations from the MLB norm over 115 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
Pitching162026-07-07Four-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