Mithrandir Metrics
Player New York Mets Refreshed Sep 28 06:00 AM ET
Player profile / New York Mets

Jefry Yan

P · Bats/Throws L/L · 6' 3", 185 lb · Age 30

Cards
1
Modules
1
Live Δ
yes
Club New York Mets Position P Roster Current MLB team Status Healthy / active roster
Traditional line

Season by season

3D Pitch Lab Projections
WLERAGGSSVIPSOWHIP
2026214.87181020.1261.72
1 Seasons214.87181020.1261.72
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.

2026-09-28
31
Pitching
percentile
Pitching9 metrics
46
Arsenal5 metrics
19
Rolling projection

Preseason / current pace / Bayesian update

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

Pending

Rolling player projection appears after current-season Statcast and projection joins refresh.

Live percentile strip

Current traits vs projection tick

100th = best in MLB.

2026-09-28
Pitching · percentile strip
WHIP1.75
5
ERA4.87
29
BB%15.5%
3
K%26.8%
81
xwOBA allowed0.320
40
Barrel allowed7.4%
50
Fastball velo97.4
91
Hard-hit allowed42.6%
21
Whiff%31.2%
95
Mithrandir+

Stuff+ and arsenal context

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

2026-09-28
Changeup Stuff+96
19
Fastball Stuff+102
49
Mithrandir Stuff+96
13
Sinker Stuff+95
11
Slider Stuff+84
1
Rolling form chart

xwOBA allowed snapshot line

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

3 snapshots
Mithrandir Metrics ROLLING XWOBA LINE Parameterized Mithrandir chart rendered as SVG for templates and exports. season=2026 Rolling xwOBA allowed Yan, Jefry · Live snapshot series; true 50/100 PA windows require PA-level logs LG AVG 0.313 0.320 2026-09-26: 0.3202026-09-27: 0.3202026-09-28: 0.320 2026-09-26 2026-09-28 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 44%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 Yan, Jefry · Aggregate zone metrics; not pitch-by-pitch locations Edge: 35%35%Zone: 40%40%Whiff: 31%31%Called strike: 14%14%First pitch strike: 44%44%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 Yan, Jefry · 2026 arsenal snapshot Sinker: 44.1%4-Seam Fastball: 25.6%Slider: 19.9%Changeup: 10.1%Other: 0.3% SI44% · 98 mphprimary pitch SI 44%FF 26%SL 20%CH 10%FA 0% MITHRANDIR · CHARTS
Mithrandir Metrics PITCH MOVEMENT Parameterized Mithrandir chart rendered as SVG for templates and exports. Pitch Arsenal Yan, Jefry · 2026 arsenal snapshot 12″24″36″48″ Sinker: 44% usage, 5″ horizontal break, 17″ drop, 97.6 mphSI98 mph4-Seam Fastball: 26% usage, 2″ horizontal break, 12″ drop, 97.3 mphFF97 mphSlider: 20% usage, 0″ horizontal break, 41″ drop, 86.4 mphSL86 mphChangeup: 10% usage, 11″ horizontal break, 28″ drop, 88.6 mphCH89 mphOther: 0% usage, 4″ horizontal break, 35″ drop, 80.9 mphFA81 mph less drop ↑ more drop ↓ · horizontal break ↔ · dot size = usage · break incl. gravity MITHRANDIR · CHARTS
PitchUsagePitchesStuff+Status
SI 43.9% 116 95 limited sample
FB 24.6% 65 102 limited sample
SL 20.8% 55 84 limited sample
CH 10.6% 28 96 limited sample
Method note

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

Reference layer

Current snapshot

Age30
Height6' 3"
Weight185 lb
Debut2026-08-05
Live layer

Delta / regression

ERA Δ--
K% Δ--
Mithrandir coverage

Module shelf

ModuleCardsLatestSignal
Pitching12026-09-25Stuff and strike quality carried the outing
Projection links / recent games

Available detail

2026-08-15 vs WSH0 ER / 3 K1.2 IP