Mithrandir Metrics
Player San Diego Padres Refreshed Jun 15 06:00 AM ET
Player profile / San Diego Padres

Yuki Matsui

P · Bats/Throws L/L · 5' 8", 165 lb · Age 30

Cards
0
Modules
0
Live Δ
yes
Club San Diego Padres Position P Roster Active Status Healthy / active roster
Traditional line

Season by season

3D Pitch Lab Projections
WLERAGGSSVIPSOWHIP
2024423.73640062.2691.16
2025313.98610163.1611.36
2026011.74140020.2230.97
3 Seasons743.5613901146.21531.22
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
72
Pitching
percentile
Pitching9 metrics
63
Arsenal3 metrics
45
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 preseason4.02
ERA current pace1.83
ERA rolling p503.47
Observed weight25%
ERA
1.87 2.63 3.47 4.31 5.07
FIP
3.02 3.53 4.10 4.66 5.17
K%
20.8% 23.4% 26.2% 29.0% 31.5%
BB%
6.9% 8.6% 10.5% 12.3% 14.0%
Live percentile strip

Current traits vs projection tick

100th = best in MLB.

2026-06-15
Pitching · percentile strip
WHIP1.00
90
ERA1.83
95
BB%11.1%
25
K%28.4%
87 +30 vs proj
xwOBA allowed0.299
66 +16 vs proj
Barrel allowed10.9%
17 -31 vs proj
Fastball velo91.6
12
Hard-hit allowed34.8%
76
Whiff%39.6%
99 +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+102
49
Mithrandir Stuff+100
34
Slider Stuff+102
53
Rolling form chart

xwOBA allowed snapshot line

Live snapshot series; true 50/100 PA windows require PA-level logs

1 snapshots
Mithrandir Metrics ROLLING XWOBA LINE Parameterized Mithrandir chart rendered as SVG for templates and exports. season=2026 Rolling xwOBA allowed Matsui, Yuki · Live snapshot series; true 50/100 PA windows require PA-level logs LG AVG 0.314 0.299 2026-06-15: 0.299 2026-06-15 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.

5Pitches 2026Season 37%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 Matsui, Yuki · Aggregate zone metrics; not pitch-by-pitch locations Edge: 35%35%Zone: 45%45%Whiff: 40%40%Called strike: 17%17%First pitch strike: 56%56%Hard hit allowed: 35%35% 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 Matsui, Yuki · 2026 arsenal snapshot 4-Seam Fastball: 37.3%Split-Finger: 28.0%Slider: 25.0%Sweeper: 6.7%Sinker: 3.0% FF37% · 92 mphprimary pitch FF 37%FS 28%SL 25%ST 7%SI 3% MITHRANDIR · CHARTS
Mithrandir Metrics PITCH MOVEMENT Parameterized Mithrandir chart rendered as SVG for templates and exports. Pitch Arsenal Matsui, Yuki · 2026 arsenal snapshot 12″24″36″48″ 4-Seam Fastball: 37% usage, 0″ horizontal break, 13″ drop, 91.7 mphFF92 mphSplit-Finger: 28% usage, 5″ horizontal break, 37″ drop, 82.9 mphFS83 mphSlider: 25% usage, 2″ horizontal break, 32″ drop, 85.6 mphSL86 mphSweeper: 7% usage, 13″ horizontal break, 45″ drop, 81.0 mphST81 mphSinker: 3% usage, 11″ horizontal break, 22″ drop, 90.2 mphSI90 mph less drop ↑ more drop ↓ · horizontal break ↔ · dot size = usage · break incl. gravity MITHRANDIR · CHARTS
PitchUsagePitchesStuff+Status
FB 52.8% 93 102 limited sample
SL 43.2% 76 102 limited sample
SI 4.0% 7 85 limited sample
Method note

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

Reference layer

Current snapshot

Age30
Height5' 8"
Weight165 lb
Debut2024-03-20
Live layer

Delta / regression

ERA Δ-2.23
K% Δ+0.049
Mithrandir coverage

Module shelf

ModuleCardsLatestSignal
No Mithrandir card history is available for this player yet.
Projection links / recent games

Available detail

Pitcher Projections 202623.5% K | 4.06 ERAProjection
2026-05-20 vs LAD0 ER / 2 K1.1 IP