Mithrandir Metrics
Player TB Refreshed Oct 21 06:00 AM ET
Player profile / TB

Griffin Jax

Player · Bats/Throws R/R · 6' 2", 195 lb · Age 31

Cards
17
Modules
1
Live Δ
yes
Club TB Position -- Roster profile Status Healthy / active roster
Traditional line

Season by season

3D Pitch Lab Projections
WLERAGGSSVIPSOWHIP
2024552.037201071.0950.87
2025174.23732066.0991.29
20268103.5334230112.11161.18
6 Seasons31413.913333915469.05211.16
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.

2026-10-21
63
Pitching
percentile
Pitching9 metrics
60
Arsenal7 metrics
89
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.

2026-10-21
Pitching · percentile strip
WHIP1.20
70
ERA3.52
70
BB%7.8%
66
K%24.9%
69
xwOBA allowed0.319
40
Barrel allowed9.0%
27
Fastball velo95.6
68
Hard-hit allowed39.3%
43
Whiff%27.6%
84
Mithrandir+

Stuff+ and arsenal context

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

2026-10-21
Changeup Stuff+110
95
Fastball Stuff+109
92
Mithrandir Stuff+109
97
Sinker Stuff+108
90
Slider Stuff+109
95
Curveball Stuff+105
86
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 Jax, Griffin · Live snapshot series; true 50/100 PA windows require PA-level logs LG AVG 0.314 0.319 2026-10-10: 0.3152026-10-11: 0.3152026-10-12: 0.3152026-10-13: 0.3152026-10-14: 0.3152026-10-15: 0.3152026-10-16: 0.3192026-10-17: 0.3192026-10-18: 0.3192026-10-19: 0.3192026-10-20: 0.3192026-10-21: 0.319 2026-10-10 2026-10-21 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.

6Pitches 2026Season 25%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 Jax, Griffin · Aggregate zone metrics; not pitch-by-pitch locations Edge: 36%36%Zone: 45%45%Whiff: 28%28%Called strike: 17%17%First pitch strike: 53%53%Hard hit allowed: 39%39% 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 Jax, Griffin · 2026 arsenal snapshot Sweeper: 24.5%Sinker: 23.0%Changeup: 22.9%4-Seam Fastball: 17.7%Curveball: 9.0%Cutter: 2.8% ST25% · 88 mphprimary pitch ST 25%SI 23%CH 23%FF 18%CU 9%FC 3% MITHRANDIR · CHARTS
Mithrandir Metrics PITCH MOVEMENT Parameterized Mithrandir chart rendered as SVG for templates and exports. Pitch Arsenal Jax, Griffin · 2026 arsenal snapshot 15″30″45″60″ Sweeper: 25% usage, 2″ horizontal break, 37″ drop, 87.5 mphST88 mphSinker: 23% usage, 2″ horizontal break, 19″ drop, 95.3 mphSI95 mphChangeup: 23% usage, 10″ horizontal break, 29″ drop, 90.9 mphCH91 mph4-Seam Fastball: 18% usage, 4″ horizontal break, 12″ drop, 95.9 mphFF96 mphCurveball: 9% usage, 4″ horizontal break, 52″ drop, 85.0 mphCU85 mphCutter: 3% usage, 1″ horizontal break, 23″ drop, 92.7 mphFC93 mph less drop ↑ more drop ↓ · horizontal break ↔ · dot size = usage · break incl. gravity MITHRANDIR · CHARTS
PitchUsagePitchesStuff+Status
SL 24.7% 275 109 qualified
SI 22.3% 248 108 qualified
CH 21.0% 234 110 qualified
FB 20.0% 223 109 qualified
CB 8.3% 93 105 limited sample
FC 3.7% 41 103 limited sample
Method note

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

Reference layer

Current snapshot

MLB bio context is unavailable.
Live layer

Delta / regression

ERA Δ--
K% Δ--

negative regression

Regression watch

Running hot. Expect some cooling.

-0.1σ gap
wOBA-against (actual)0.317
xwOBA-against (deserved)0.319

Jax’s wOBA-against sits at 0.317, but the quality of contact underneath says it should be 0.319 — a gap of 0.002, -0.1 standard deviations from the MLB norm over 117 IP. The results have outrun the underlying process; as the sample grows, expect the numbers to drift back toward the deserved level.

Mithrandir coverage

Module shelf

ModuleCardsLatestSignal
Pitching172026-10-15Sinker played up through SI/CU tunnel quality
Projection links / recent games

Available detail

No projection links or recent game log rows are available yet.