Mithrandir Metrics
Player Los Angeles Angels Refreshed Sep 5 06:00 AM ET
Player profile / Los Angeles Angels

Yusei Kikuchi

P · Bats/Throws L/L · 6' 0", 210 lb · Age 35

Cards
11
Modules
1
Live Δ
yes
Club Los Angeles Angels Position P Roster Current MLB team Status Healthy / active roster
Traditional line

Season by season

3D Pitch Lab Projections
WLERAGGSSVIPSOWHIP
20249104.0532320175.22061.20
20257113.9933330178.11741.42
2026055.6599043.0431.49
8 Seasons48634.5120819611031.010541.36
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.

2026-09-05
30
Pitching
percentile
Pitching9 metrics
32
Arsenal5 metrics
67
Rolling projection

Preseason / current pace / Bayesian update

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

2026-09-05
ERA preseason4.19
ERA current pace5.65
ERA rolling p504.87
Observed weight47%
ERA
3.90 4.36 4.87 5.39 5.85
FIP
3.55 3.95 4.40 4.85 5.25
K%
19.0% 20.5% 22.1% 23.7% 25.2%
BB%
6.4% 7.2% 8.0% 8.9% 9.7%
Live percentile strip

Current traits vs projection tick

100th = best in MLB.

2026-09-05
Pitching · percentile strip
WHIP1.46
28
ERA5.65
15
BB%9.0%
49 -19 vs proj
K%21.3%
44
xwOBA allowed0.351
14 -35 vs proj
Barrel allowed9.7%
18
Fastball velo95.5
68
Hard-hit allowed45.5%
9
Whiff%21.3%
38 -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.

2026-09-05
Fastball Stuff+104
62
Mithrandir Stuff+104
65
Curveball Stuff+103
54
Cutter Stuff+102
56
Slider Stuff+109
95
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 Kikuchi, Yusei · Live snapshot series; true 50/100 PA windows require PA-level logs LG AVG 0.313 0.351 2026-08-25: 0.3552026-08-26: 0.3552026-08-27: 0.3552026-08-28: 0.3552026-08-29: 0.3552026-08-30: 0.3552026-08-31: 0.3512026-09-01: 0.3512026-09-02: 0.3512026-09-03: 0.3512026-09-04: 0.3512026-09-05: 0.351 2026-08-25 2026-09-05 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.

5Pitches 2026Season 38%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 Kikuchi, Yusei · Aggregate zone metrics; not pitch-by-pitch locations Edge: 34%34%Zone: 47%47%Whiff: 21%21%Called strike: 15%15%First pitch strike: 48%48%Hard hit allowed: 46%46% 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 Kikuchi, Yusei · 2026 arsenal snapshot 4-Seam Fastball: 38.1%Slider: 22.7%Split-Finger: 19.7%Curveball: 10.2%Cutter: 9.4% FF38% · 96 mphprimary pitch FF 38%SL 23%FS 20%CU 10%FC 9% MITHRANDIR · CHARTS
Mithrandir Metrics PITCH MOVEMENT Parameterized Mithrandir chart rendered as SVG for templates and exports. Pitch Arsenal Kikuchi, Yusei · 2026 arsenal snapshot 15″30″45″60″ 4-Seam Fastball: 38% usage, 4″ horizontal break, 14″ drop, 95.5 mphFF96 mphSlider: 23% usage, 1″ horizontal break, 35″ drop, 86.9 mphSL87 mphSplit-Finger: 20% usage, 7″ horizontal break, 27″ drop, 86.6 mphFS87 mphCurveball: 10% usage, 5″ horizontal break, 55″ drop, 78.4 mphCU78 mphCutter: 9% usage, 1″ horizontal break, 24″ drop, 90.5 mphFC91 mph less drop ↑ more drop ↓ · horizontal break ↔ · dot size = usage · break incl. gravity MITHRANDIR · CHARTS
PitchUsagePitchesStuff+Status
FB 47.9% 270 104 qualified
SL 27.7% 156 109 limited sample
CB 12.6% 71 103 limited sample
FC 11.9% 67 102 limited sample
Method note

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

Reference layer

Current snapshot

Age35
Height6' 0"
Weight210 lb
Debut2019-03-21
Live layer

Delta / regression

ERA Δ+1.58
K% Δ-0.018

positive regression

Regression watch

Unlucky so far. Better days ahead.

1.2σ gap
wOBA-against (actual)0.389
xwOBA-against (deserved)0.351

Kikuchi’s wOBA-against sits at 0.389, but the quality of contact underneath says it should be 0.351 — a gap of 0.038, 1.2 standard deviations from the MLB norm over 47 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
Pitching112026-08-30Four-Seam Fastball played up through FF/SL tunnel quality
Projection links / recent games

Available detail

Pitcher Projections 202623.1% K | 4.07 ERAProjection
2026-04-13 @ NYY4 ER / 3 K3.1 IP
2026-04-07 vs ATL4 ER / 8 K5.0 IP
2026-04-01 @ CHC5 ER / 5 K5.1 IP
2026-03-27 @ HOU2 ER / 3 K4.1 IP