Mithrandir Metrics
Player Houston Astros Refreshed Sep 27 06:00 AM ET
Player profile / Houston Astros

Josh Hader

P · Bats/Throws L/L · 6' 3", 188 lb · Age 32

Cards
0
Modules
0
Live Δ
yes
Club Houston Astros Position P Roster Current MLB team Status Healthy / active roster
Traditional line

Season by season

3D Pitch Lab Projections
WLERAGGSSVIPSOWHIP
2024883.807103471.01050.96
2025622.054802852.2760.85
2026421.014502644.2550.76
10 Seasons38332.505130253557.08840.92
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
89
Pitching
percentile
Pitching9 metrics
85
Arsenal3 metrics
46
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 preseason3.35
ERA current pace1.01
ERA rolling p502.39
Observed weight41%
ERA
0.86 1.59 2.39 3.19 3.92
FIP
0.84 1.81 2.88 3.95 4.92
K%
28.6% 30.8% 33.3% 35.7% 38.0%
BB%
6.3% 7.8% 9.4% 11.0% 12.5%
Live percentile strip

Current traits vs projection tick

100th = best in MLB.

2026-09-27
Pitching · percentile strip
WHIP0.77
99
ERA1.01
100
BB%9.0%
49 +17 vs proj
K%32.9%
97
xwOBA allowed0.215
100
Barrel allowed6.2%
71 +46 vs proj
Fastball velo95.1
61
Hard-hit allowed32.0%
91
Whiff%32.1%
97
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
Sinker Stuff+102
45
Mithrandir Stuff+103
62
Slider Stuff+99
29
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 Hader, Josh · Live snapshot series; true 50/100 PA windows require PA-level logs LG AVG 0.313 0.215 2026-09-13: 0.2032026-09-14: 0.2032026-09-18: 0.2002026-09-19: 0.2002026-09-20: 0.2002026-09-21: 0.2002026-09-22: 0.2002026-09-23: 0.2002026-09-24: 0.2152026-09-25: 0.2152026-09-26: 0.2152026-09-27: 0.215 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.

2Pitches 2026Season 64%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 Hader, Josh · Aggregate zone metrics; not pitch-by-pitch locations Edge: 36%36%Zone: 45%45%Whiff: 32%32%Called strike: 15%15%First pitch strike: 62%62%Hard hit allowed: 32%32% 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 Hader, Josh · 2026 arsenal snapshot Sinker: 64.3%Slider: 35.7% SI64% · 95 mphprimary pitch SI 64%SL 36% MITHRANDIR · CHARTS
Mithrandir Metrics PITCH MOVEMENT Parameterized Mithrandir chart rendered as SVG for templates and exports. Pitch Arsenal Hader, Josh · 2026 arsenal snapshot 12″24″36″48″ Sinker: 64% usage, 3″ horizontal break, 12″ drop, 95.1 mphSI95 mphSlider: 36% usage, 1″ horizontal break, 36″ drop, 84.5 mphSL85 mph less drop ↑ more drop ↓ · horizontal break ↔ · dot size = usage · break incl. gravity MITHRANDIR · CHARTS
PitchUsagePitchesStuff+Status
SI 65.9% 203 102 qualified
SL 34.1% 105 99 limited sample
Method note

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

Reference layer

Current snapshot

Age32
Height6' 3"
Weight188 lb
Debut2017-06-10
Live layer

Delta / regression

ERA Δ-2.51
K% Δ+0.013

negative regression

Regression watch

Running hot. Expect some cooling.

-1.0σ gap
wOBA-against (actual)0.180
xwOBA-against (deserved)0.215

Hader’s wOBA-against sits at 0.180, but the quality of contact underneath says it should be 0.215 — a gap of 0.034, -1.0 standard deviations from the MLB norm over 44 IP. The results have outrun the underlying process; as the sample grows, expect the numbers to drift back toward the deserved level.

Mithrandir coverage

Module shelf

ModuleCardsLatestSignal
No Mithrandir card history is available for this player yet.
Projection links / recent games

Available detail

Pitcher Projections 202631.7% K | 3.52 ERAProjection