Mithrandir Metrics
Player Los Angeles Angels Refreshed Jul 17 06:00 AM ET
Player profile / Los Angeles Angels

Yusei Kikuchi

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

Cards
9
Modules
1
Live Δ
yes
Club Los Angeles Angels Position P Roster Injured 60-Day Status IL-60
Traditional line

Season by season

3D Pitch Lab Projections
WLERAGGSSVIPSOWHIP
20249104.0532320175.22061.20
20257113.9933330178.11741.42
2026035.8177031.0331.58
8 Seasons48614.5020619411019.010441.37
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.

2026-07-17
25
Pitching
percentile
Pitching9 metrics
33
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.

2026-07-17
ERA preseason4.17
ERA current pace5.81
ERA rolling p504.83
Observed weight40%
ERA
3.85 4.31 4.83 5.35 5.82
FIP
3.26 3.67 4.12 4.57 4.97
K%
19.4% 20.9% 22.7% 24.5% 26.0%
BB%
6.8% 7.7% 8.6% 9.5% 10.4%
Live percentile strip

Current traits vs projection tick

100th = best in MLB.

2026-07-17
Pitching · percentile strip
WHIP1.53
15
ERA5.81
13
BB%10.6%
29 -37 vs proj
K%21.7%
45
xwOBA allowed0.340
25 -25 vs proj
Barrel allowed8.3%
40
Fastball velo95.4
67
Hard-hit allowed42.6%
26
Whiff%21.1%
34 -22 vs proj
Mithrandir+

Stuff+ and arsenal context

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

2026-07-17
Mithrandir Stuff+104
69
Curveball Stuff+102
49
Cutter Stuff+102
58
Fastball Stuff+104
61
Slider Stuff+112
97
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 0.314 0.340 2026-07-06: 0.3402026-07-07: 0.3402026-07-08: 0.3402026-07-09: 0.3402026-07-10: 0.3402026-07-11: 0.3402026-07-12: 0.3402026-07-13: 0.3402026-07-14: 0.3402026-07-15: 0.3402026-07-16: 0.3402026-07-17: 0.340 2026-07-06 2026-07-17 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 34%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: 45%45%Whiff: 21%21%Called strike: 15%15%First pitch strike: 49%49%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 Kikuchi, Yusei · 2026 arsenal snapshot 4-Seam Fastball: 33.9%Slider: 23.6%Split-Finger: 22.2%Cutter: 11.5%Curveball: 8.8% FF34% · 95 mphprimary pitch FF 34%SL 24%FS 22%FC 11%CU 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: 34% usage, 4″ horizontal break, 13″ drop, 95.4 mphFF95 mphSlider: 24% usage, 1″ horizontal break, 35″ drop, 86.9 mphSL87 mphSplit-Finger: 22% usage, 7″ horizontal break, 28″ drop, 86.7 mphFS87 mphCutter: 11% usage, 1″ horizontal break, 24″ drop, 90.2 mphFC90 mphCurveball: 9% usage, 5″ horizontal break, 54″ drop, 78.7 mphCU79 mph less drop ↑ more drop ↓ · horizontal break ↔ · dot size = usage · break incl. gravity MITHRANDIR · CHARTS
PitchUsagePitchesStuff+Status
FB 43.8% 177 104 limited sample
SL 29.7% 120 112 limited sample
FC 15.3% 62 102 limited sample
CB 11.1% 45 102 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+1.74
K% Δ-0.014

positive regression

Regression watch

Unlucky so far. Better days ahead.

1.4σ gap
wOBA-against (actual)0.388
xwOBA-against (deserved)0.340

Kikuchi’s wOBA-against sits at 0.388, but the quality of contact underneath says it should be 0.340 — a gap of 0.048, 1.4 standard deviations from the MLB norm over 35 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
Pitching92026-04-294-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