Mithrandir Metrics
Player Los Angeles Dodgers Refreshed Jun 15 06:00 AM ET
Player profile / Los Angeles Dodgers

Will Klein

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

Cards
0
Modules
0
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
2026222.25231128.0321.29
3 Seasons433.55451150.2601.54
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.

2026-06-15
65
Pitching
percentile
Pitching9 metrics
63
Arsenal4 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.

2026-06-15
ERA preseason3.78
ERA current pace2.25
ERA rolling p503.23
Observed weight36%
ERA
1.41 2.27 3.23 4.19 5.05
FIP
2.00 2.63 3.34 4.05 4.69
K%
20.5% 22.7% 25.1% 27.5% 29.7%
BB%
7.2% 8.7% 10.3% 11.9% 13.3%
Live percentile strip

Current traits vs projection tick

100th = best in MLB.

2026-06-15
Pitching · percentile strip
WHIP1.39
36
ERA2.25
87
BB%9.6%
39
K%25.9%
75
xwOBA allowed0.268
87 +21 vs proj
Barrel allowed3.6%
93 +23 vs proj
Fastball velo97.7
94
Hard-hit allowed42.9%
28
Whiff%20.6%
31 -20 vs proj
Mithrandir+

Stuff+ and arsenal context

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

2026-06-15
Fastball Stuff+103
56
Curveball Stuff+101
31
Mithrandir Stuff+105
76
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 0.268 2026-06-04: 0.2662026-06-05: 0.2742026-06-06: 0.2742026-06-07: 0.2742026-06-08: 0.2742026-06-09: 0.2742026-06-10: 0.2742026-06-11: 0.2652026-06-12: 0.2652026-06-13: 0.2682026-06-14: 0.2682026-06-15: 0.268 2026-06-04 2026-06-15 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: 36%36%Zone: 51%51%Whiff: 21%21%Called strike: 21%21%First pitch strike: 54%54%Hard hit allowed: 43%43% 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: 51.4%Sweeper: 26.1%Curveball: 16.5%Slider: 6.0% FF51% · 98 mphprimary pitch FF 51%ST 26%CU 17%SL 6% 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, 97.7 mphFF98 mphSweeper: 26% usage, 8″ horizontal break, 39″ drop, 88.8 mphST89 mphCurveball: 17% usage, 7″ horizontal break, 51″ drop, 84.9 mphCU85 mphSlider: 6% usage, 2″ horizontal break, 29″ drop, 90.5 mphSL91 mph less drop ↑ more drop ↓ · horizontal break ↔ · dot size = usage · break incl. gravity MITHRANDIR · CHARTS
PitchUsagePitchesStuff+Status
FB 51.1% 202 103 qualified
SL 30.9% 122 111 limited sample
CB 18.0% 71 101 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-1.53
K% Δ+0.007

positive regression

Regression watch

Unlucky so far. Better days ahead.

2.2σ gap
wOBA-against (actual)0.347
xwOBA-against (deserved)0.268

Klein’s wOBA-against sits at 0.347, but the quality of contact underneath says it should be 0.268 — a gap of 0.079, 2.2 standard deviations from the MLB norm over 31 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
No Mithrandir card history is available for this player yet.
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