Mithrandir Metrics
Pitcher projection 2026 Refreshed Jul 17 06:00 AM ET
Pitcher projection / LAD · 2026

Klein, Will

Late-inning arm with usable miss-bat shape

Primary
25.2% K%
Range
18.0% to 31.3%
Live Δ
yes
Team LAD Archetype Balanced reliever 2 Age 27 Status Healthy / active roster
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.

2026-07-17
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.

2026-07-17
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%
Current percentile strip

Actual percentile with projection tick

100th = best in MLB.

2026-07-17
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

Stuff+ appears when the current pitch-event scoring artifact includes this pitcher; Arsenal Decomposition remains descriptive support under Stuff+.

2026-07-17
Fastball Stuff+103
57
Curveball Stuff+100
18
Mithrandir Stuff+105
74
Slider Stuff+111
96
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
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 2026-07-06: 0.2742026-07-07: 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: 0.279 2026-07-06 2026-07-17 xwOBA allowed MITHRANDIR · CHARTS
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.

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.

Model read

Projection notes

1
templated note
Volume stays relief-shaped even when the bat-miss traits are strong.
2
templated note
Home park slightly inflates the home-run risk band.
3
templated note
Primary mix entering the season: 4-Seam Fastball 57%, Curveball 22%, Cutter 13%.
Live context

Current-season signal

ERA Δ-1.37
K% Δ+0.006
Sample40.3 IP

positive regression

Projection table

Point projection and range

MetricPointRangeHalf-width
Innings31.2----
Batters Faced144----
K%25.2%18.0% to 31.3%+/- 6.7%
BB%10.9%6.7% to 15.5%+/- 4.4%
Whiff%23.1%16.7% to 29.2%+/- 6.3%
HR/90.860.00 to 1.54+/- 0.77
xwOBA Against0.2970.251 to 0.379+/- 0.064
Barrel% Allowed6.4%2.6% to 10.3%+/- 3.8%
ERA3.781.53 to 6.48+/- 2.48
FIP3.511.33 to 4.99+/- 1.83
WHIP1.3491.048 to 1.775+/- 0.363
Platoon / Shape
vs LHH

68 career BF

xwOBA0.265
K%20.3%
BB%10.9%
Barrel4.4%
vs RHH

65 career BF

xwOBA0.259
K%20.6%
BB%9.4%
Barrel4.3%