Mithrandir Metrics
Player Arizona Diamondbacks Refreshed Sep 30 06:00 AM ET
Player profile / Arizona Diamondbacks

Justin Martinez

P · Bats/Throws R/R · 6' 3", 225 lb · Age 25

Cards
0
Modules
0
Live Δ
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Club Arizona Diamondbacks Position P Roster Current MLB team Status Healthy / active roster
Traditional line

Season by season

3D Pitch Lab Projections
WLERAGGSSVIPSOWHIP
2024562.48640872.2911.31
2025124.11170515.1221.24
2026312.03150013.1181.13
4 Seasons993.56106014111.11451.37
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.

2026-09-30
65
Pitching
percentile
Arsenal3 metrics
65
Rolling projection

Preseason / current pace / Bayesian update

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

2026-09-30
ERA preseason3.74
ERA current pace0.00
ERA rolling p503.04
Observed weight19%
ERA
0.84 1.88 3.04 4.20 5.24
FIP
1.99 2.63 3.34 4.05 4.69
K%
25.7% 29.0% 32.7% 36.3% 39.6%
BB%
9.0% 11.1% 13.5% 15.9% 18.0%
Live percentile strip

Current traits vs projection tick

100th = best in MLB.

2026-09-30
Mithrandir+

Stuff+ and arsenal context

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

2026-09-30
Fastball Stuff+99
28
Mithrandir Stuff+104
69
Sinker Stuff+112
99
Rolling form chart

xwOBA allowed snapshot line

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

0 snapshots
No chart yet

No Live State xwOBA snapshots are available for this player.

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.

4Pitches 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 Martinez, Justin · Aggregate zone metrics; not pitch-by-pitch locations Edge: 41%41%Zone: 49%49%Whiff: 29%29%Called strike: 19%19%First pitch strike: 49%49%Hard hit allowed: 27%27% 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 Martinez, Justin · 2026 arsenal snapshot 4-Seam Fastball: 36.6%Sinker: 35.8%Split-Finger: 23.3%Slider: 4.3% FF37% · 102 mphprimary pitch FF 37%SI 36%FS 23%SL 4% MITHRANDIR · CHARTS
Mithrandir Metrics PITCH MOVEMENT Parameterized Mithrandir chart rendered as SVG for templates and exports. Pitch Arsenal Martinez, Justin · 2026 arsenal snapshot 9″18″27″36″ 4-Seam Fastball: 37% usage, 4″ horizontal break, 12″ drop, 101.6 mphFF102 mphSinker: 36% usage, 7″ horizontal break, 18″ drop, 101.8 mphSI102 mphSplit-Finger: 23% usage, 0″ horizontal break, 34″ drop, 90.3 mphFS90 mphSlider: 4% usage, 1″ horizontal break, 24″ drop, 93.3 mphSL93 mph less drop ↑ more drop ↓ · horizontal break ↔ · dot size = usage · break incl. gravity MITHRANDIR · CHARTS
PitchUsagePitchesStuff+Status
SI 50.4% 64 112 limited sample
FB 45.7% 58 99 limited sample
SL 3.9% 5 104 limited sample
Method note

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

Reference layer

Current snapshot

Age25
Height6' 3"
Weight225 lb
Debut2023-07-07
Live layer

Delta / regression

No Live State delta is available for this profile yet.

Mithrandir coverage

Module shelf

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

Available detail

Pitcher Projections 202632.0% K | 3.03 ERAProjection