Mithrandir Metrics
Player Los Angeles Angels Refreshed Sep 26 06:00 AM ET
Player profile / Los Angeles Angels

Yusei Kikuchi

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

Cards
14
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
2026164.881313062.2601.55
8 Seasons49644.4921220011050.210711.37
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.

2026-09-26
27
Pitching
percentile
Pitching9 metrics
29
Arsenal5 metrics
71
Rolling projection

Preseason / current pace / Bayesian update

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

2026-09-26
ERA preseason4.17
ERA current pace5.02
ERA rolling p504.64
Observed weight56%
ERA
3.67 4.13 4.64 5.16 5.62
FIP
3.39 3.79 4.23 4.68 5.08
K%
19.1% 20.4% 21.8% 23.3% 24.6%
BB%
7.6% 8.3% 9.1% 10.0% 10.7%
Live percentile strip

Current traits vs projection tick

100th = best in MLB.

2026-09-26
Pitching · percentile strip
WHIP1.52
20
ERA5.02
27
BB%10.6%
29 -40 vs proj
K%20.6%
39 -20 vs proj
xwOBA allowed0.343
19 -29 vs proj
Barrel allowed8.8%
29
Fastball velo95.5
67
Hard-hit allowed45.9%
7
Whiff%20.0%
27 -32 vs proj
Mithrandir+

Stuff+ and arsenal context

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

2026-09-26
Fastball Stuff+104
61
Mithrandir Stuff+104
65
Slider Stuff+107
89
Curveball Stuff+104
74
Cutter Stuff+103
68
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 0.343 2026-09-12: 0.3412026-09-13: 0.3412026-09-14: 0.3412026-09-18: 0.3392026-09-19: 0.3392026-09-20: 0.3392026-09-21: 0.3392026-09-22: 0.3392026-09-23: 0.3432026-09-24: 0.3432026-09-25: 0.3432026-09-26: 0.343 2026-09-12 2026-09-26 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 41%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: 48%48%Whiff: 20%20%Called strike: 15%15%First pitch strike: 49%49%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: 41.4%Slider: 25.2%Split-Finger: 17.3%Curveball: 10.3%Cutter: 5.9% FF41% · 96 mphprimary pitch FF 41%SL 25%FS 17%CU 10%FC 6% 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: 41% usage, 3″ horizontal break, 15″ drop, 95.5 mphFF96 mphSlider: 25% usage, 0″ horizontal break, 34″ drop, 87.4 mphSL87 mphSplit-Finger: 17% usage, 7″ horizontal break, 28″ drop, 86.6 mphFS87 mphCurveball: 10% usage, 4″ horizontal break, 51″ drop, 79.4 mphCU79 mphCutter: 6% usage, 1″ horizontal break, 24″ drop, 90.2 mphFC90 mph less drop ↑ more drop ↓ · horizontal break ↔ · dot size = usage · break incl. gravity MITHRANDIR · CHARTS
PitchUsagePitchesStuff+Status
FB 49.5% 396 104 qualified
SL 29.1% 233 107 qualified
CB 12.9% 103 104 limited sample
FC 8.5% 68 103 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+0.95
K% Δ-0.025

positive regression

Regression watch

Unlucky so far. Better days ahead.

1.3σ gap
wOBA-against (actual)0.381
xwOBA-against (deserved)0.343

Kikuchi’s wOBA-against sits at 0.381, but the quality of contact underneath says it should be 0.343 — a gap of 0.038, 1.3 standard deviations from the MLB norm over 67 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
Pitching142026-09-22Four-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