Mithrandir Metrics
Player Washington Nationals Refreshed Jun 1 06:00 AM ET
Player profile / Washington Nationals

Jake Irvin

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

Cards
15
Modules
1
Live Δ
yes
Club Washington Nationals Position P Roster Injured 15-Day Status IL-15
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 preseason4.65
ERA current pace5.23
ERA rolling p504.94
Observed weight51%
ERA
3.74 4.31 4.94 5.58 6.15
FIP
3.52 3.84 4.20 4.56 4.88
K%
19.1% 20.5% 22.0% 23.5% 24.9%
BB%
6.6% 7.4% 8.3% 9.1% 9.9%
Live percentile strip

Current traits vs projection tick

100th = best in MLB.

2026-06-01
Pitching · percentile strip
BB%9.3%
40 -26 vs proj
Barrel allowed11.0%
15 -21 vs proj
Fastball velo92.4
21
Hard-hit allowed45.2%
16
K%25.5%
72 +51 vs proj
Whiff%23.0%
50 +33 vs proj
xwOBA allowed0.349
20
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+104
67
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 Irvin, Jake · Live snapshot series; true 50/100 PA windows require PA-level logs LG AVG 0.314 2026-05-17: 0.3722026-05-19: 0.3722026-05-21: 0.3672026-05-23: 0.3672026-05-24: 0.3492026-05-25: 0.3492026-05-26: 0.3492026-05-28: 0.3492026-05-29: 0.3492026-05-30: 0.3492026-05-31: 0.3492026-06-01: 0.349 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.

6Pitches 2026Season 28%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 Irvin, Jake · Aggregate zone metrics; not pitch-by-pitch locations Edge: 35%35%Zone: 50%50%Whiff: 23%23%Called strike: 17%17%First pitch strike: 52%52%Hard hit allowed: 45%45% 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 Irvin, Jake · 2026 arsenal snapshot 4-Seam Fastball: 28.1%Curveball: 24.7%Sinker: 23.5%Cutter: 10.8%Sweeper: 7.9%Changeup: 4.9% MIX FF 28%CU 25%SI 24%FC 11%ST 8%CH 5% MITHRANDIR · CHARTS
Mithrandir Metrics PITCH MOVEMENT Parameterized Mithrandir chart rendered as SVG for templates and exports. Pitch Arsenal Irvin, Jake · 2026 arsenal snapshot FF: HB -0.3, IVB 1.4FFCU: HB 0.6, IVB 4.1CUSI: HB 0.4, IVB 2.1SIFC: HB 0.1, IVB 2.2FCST: HB -0.6, IVB 3.0STCH: HB -1.2, IVB 2.8CH horizontal break IVB MITHRANDIR · CHARTS
PitchUsagePitchesStuff+Status
FB 27.5% 261 100 qualified
CB 25.6% 243 103 qualified
SI 24.0% 228 106 qualified
FC 10.6% 101 106 limited sample
SL 7.8% 74 100 limited sample
CH 4.4% 42 102 limited sample
Method note

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

Reference layer

Current snapshot

Age29
Height6' 6"
Weight234 lb
Debut2023-05-03
Live layer

Delta / regression

ERA Δ-0.08
K% Δ+0.074

positive regression

Mithrandir coverage

Module shelf

ModuleCardsLatestSignal
Pitching152026-05-23Curveball played up through CU/FF tunnel quality
Projection links / recent games

Available detail

Pitcher Projections 202618.1% K | 5.31 ERAProjection
2026-04-20 vs ATL3 ER / 4 K5.0 IP
2026-04-15 @ PIT2 ER / 5 K5.0 IP
2026-04-04 vs LAD6 ER / 4 K4.0 IP
2026-03-29 @ CHC2 ER / 7 K5.0 IP