Mithrandir Metrics
Player Los Angeles Dodgers Refreshed Jul 18 06:00 AM ET
Player profile / Los Angeles Dodgers

Will Klein

P · Bats/Throws R/R · 6' 5", 230 lb · Age 26

Cards
1
Modules
1
Live Δ
yes
Club Los Angeles Dodgers Position P Roster Active Status Healthy / active roster
Traditional line

Season by season

3D Pitch Lab Projections
WLERAGGSSVIPSOWHIP
20241011.058007.172.45
2025112.35140015.1211.57
2026342.41322237.1431.37
3 Seasons553.45542260.0711.55
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.

2026-07-18
60
Pitching
percentile
Pitching9 metrics
63
Arsenal4 metrics
61
Rolling projection

Preseason / current pace / Bayesian update

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

2026-07-18
ERA preseason3.78
ERA current pace2.41
ERA rolling p503.20
Observed weight43%
ERA
1.43 2.27 3.20 4.13 4.97
FIP
2.11 2.73 3.42 4.11 4.73
K%
21.0% 23.0% 25.2% 27.4% 29.4%
BB%
7.8% 9.2% 10.6% 12.1% 13.5%
Live percentile strip

Current traits vs projection tick

100th = best in MLB.

2026-07-18
Pitching · percentile strip
WHIP1.44
29
ERA2.41
89
BB%10.7%
27
K%25.8%
73
xwOBA allowed0.279
84 +18 vs proj
Barrel allowed3.7%
94 +24 vs proj
Fastball velo97.6
92
Hard-hit allowed41.3%
34
Whiff%22.1%
43
Mithrandir+

Stuff+ and arsenal context

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

2026-07-18
Fastball Stuff+103
57
Curveball Stuff+100
18
Mithrandir Stuff+105
74
Slider Stuff+111
96
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 Klein, Will · Live snapshot series; true 50/100 PA windows require PA-level logs LG AVG 0.314 0.279 2026-07-07: 0.2742026-07-08: 0.2742026-07-09: 0.2802026-07-10: 0.2802026-07-11: 0.2802026-07-12: 0.2792026-07-13: 0.2792026-07-14: 0.2792026-07-15: 0.2792026-07-16: 0.2792026-07-17: 0.2792026-07-18: 0.279 2026-07-07 2026-07-18 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.

4Pitches 2026Season 51%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 Klein, Will · Aggregate zone metrics; not pitch-by-pitch locations Edge: 37%37%Zone: 49%49%Whiff: 22%22%Called strike: 20%20%First pitch strike: 53%53%Hard hit allowed: 41%41% 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 Klein, Will · 2026 arsenal snapshot 4-Seam Fastball: 51.1%Sweeper: 27.5%Curveball: 16.1%Slider: 5.3% FF51% · 98 mphprimary pitch FF 51%ST 28%CU 16%SL 5% MITHRANDIR · CHARTS
Mithrandir Metrics PITCH MOVEMENT Parameterized Mithrandir chart rendered as SVG for templates and exports. Pitch Arsenal Klein, Will · 2026 arsenal snapshot 15″30″45″60″ 4-Seam Fastball: 51% usage, 0″ horizontal break, 13″ drop, 97.6 mphFF98 mphSweeper: 28% usage, 8″ horizontal break, 38″ drop, 88.6 mphST89 mphCurveball: 16% usage, 7″ horizontal break, 51″ drop, 84.9 mphCU85 mphSlider: 5% usage, 2″ horizontal break, 29″ drop, 90.7 mphSL91 mph less drop ↑ more drop ↓ · horizontal break ↔ · dot size = usage · break incl. gravity MITHRANDIR · CHARTS
PitchUsagePitchesStuff+Status
FB 51.0% 224 103 qualified
SL 31.0% 136 111 limited sample
CB 18.0% 79 100 limited sample
Method note

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

Reference layer

Current snapshot

Age26
Height6' 5"
Weight230 lb
Debut2024-04-28
Live layer

Delta / regression

ERA Δ-1.37
K% Δ+0.006

positive regression

Regression watch

Unlucky so far. Better days ahead.

2.0σ gap
wOBA-against (actual)0.348
xwOBA-against (deserved)0.279

Klein’s wOBA-against sits at 0.348, but the quality of contact underneath says it should be 0.279 — a gap of 0.069, 2.0 standard deviations from the MLB norm over 40 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
Pitching12026-06-224-Seam Fastball played up through FF/ST tunnel quality
Projection links / recent games

Available detail

Pitcher Projections 202625.2% K | 3.78 ERAProjection
2026-05-20 @ SD0 ER / 1 K1.0 IP
2026-04-12 vs TEX0 ER / 4 K2.0 IP
2026-04-06 @ TOR0 ER / 2 K2.0 IP
2026-04-01 vs CLE1 ER / 1 K1.2 IP
2026-03-26 vs AZ0 ER / 1 K1.0 IP