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

Kyle Harrison

P · Bats/Throws R/L · 6' 2", 216 lb · Age 25

Cards
21
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
2024774.5624240124.11181.34
2025114.04116035.2381.37
20261154.2028240115.21411.35
4 Seasons20144.3270610310.13321.33
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
62
Pitching
percentile
Pitching9 metrics
55
Arsenal5 metrics
56
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 preseason4.19
ERA current pace4.28
ERA rolling p504.25
Observed weight69%
ERA
2.84 3.51 4.25 5.00 5.67
FIP
3.16 3.57 4.02 4.48 4.89
K%
24.3% 25.5% 26.8% 28.1% 29.2%
BB%
6.0% 6.5% 7.2% 7.8% 8.4%
Live percentile strip

Current traits vs projection tick

100th = best in MLB.

2026-09-27
Pitching · percentile strip
WHIP1.37
43
ERA4.28
44
BB%6.9%
80 +20 vs proj
K%27.6%
84 +15 vs proj
xwOBA allowed0.308
57
Barrel allowed9.0%
25
Fastball velo94.7
55
Hard-hit allowed40.2%
37
Whiff%25.9%
74
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+106
77
Mithrandir Stuff+103
63
Slider Stuff+100
32
Changeup Stuff+98
24
Sinker Stuff+108
86
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 Harrison, Kyle · Live snapshot series; true 50/100 PA windows require PA-level logs LG AVG 0.313 0.308 2026-09-13: 0.3032026-09-14: 0.3032026-09-18: 0.3072026-09-19: 0.3072026-09-20: 0.3072026-09-21: 0.3092026-09-22: 0.3092026-09-23: 0.3092026-09-24: 0.3092026-09-25: 0.3092026-09-26: 0.3092026-09-27: 0.308 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.

5Pitches 2026Season 57%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 Harrison, Kyle · Aggregate zone metrics; not pitch-by-pitch locations Edge: 38%38%Zone: 49%49%Whiff: 26%26%Called strike: 17%17%First pitch strike: 54%54%Hard hit allowed: 40%40% 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 Harrison, Kyle · 2026 arsenal snapshot 4-Seam Fastball: 56.6%Slurve: 31.5%Changeup: 9.2%Sinker: 2.7%Cutter: 0.0% FF57% · 95 mphprimary pitch FF 57%SV 32%CH 9%SI 3%FC 0% MITHRANDIR · CHARTS
Mithrandir Metrics PITCH MOVEMENT Parameterized Mithrandir chart rendered as SVG for templates and exports. Pitch Arsenal Harrison, Kyle · 2026 arsenal snapshot 12″24″36″48″ 4-Seam Fastball: 57% usage, 6″ horizontal break, 16″ drop, 94.8 mphFF95 mphSlurve: 32% usage, 3″ horizontal break, 45″ drop, 82.0 mphSV82 mphChangeup: 9% usage, 10″ horizontal break, 41″ drop, 85.8 mphCH86 mphSinker: 3% usage, 8″ horizontal break, 20″ drop, 94.2 mphSI94 mphCutter: 0% usage, 0″ horizontal break, 28″ drop, 89.7 mphFC90 mph less drop ↑ more drop ↓ · horizontal break ↔ · dot size = usage · break incl. gravity MITHRANDIR · CHARTS
PitchUsagePitchesStuff+Status
FB 56.2% 797 106 qualified
SL 31.7% 449 100 qualified
CH 10.3% 146 98 limited sample
SI 1.7% 24 108 limited sample
FC 0.1% 1 101 limited sample
Method note

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

Reference layer

Current snapshot

Age25
Height6' 2"
Weight216 lb
Debut2023-08-22
Live layer

Delta / regression

ERA Δ+0.30
K% Δ+0.028

positive regression

Regression watch

Unlucky so far. Better days ahead.

2.6σ gap
wOBA-against (actual)0.376
xwOBA-against (deserved)0.308

Harrison’s wOBA-against sits at 0.376, but the quality of contact underneath says it should be 0.308 — a gap of 0.068, 2.6 standard deviations from the MLB norm over 121 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
Pitching212026-09-06Four-Seam Fastball played up through FF/CH tunnel quality
Projection links / recent games

Available detail

Pitcher Projections 202624.8% K | 3.98 ERAProjection
2026-05-20 @ CHC0 ER / 11 K7.0 IP
2026-04-11 vs WSH2 ER / 1 K4.1 IP
2026-04-05 @ KC2 ER / 6 K5.1 IP
2026-03-30 vs TB1 ER / 8 K5.0 IP