Mithrandir Metrics
Player ATH Refreshed Sep 1 06:00 AM ET
Player profile / ATH

Mason Barnett

Player · Bats/Throws R/R · 6' 0", 218 lb · Age 25

Cards
7
Modules
1
Live Δ
yes
Club ATH Position -- Roster profile Status Out / inactive
Traditional line

Season by season

3D Pitch Lab Projections
WLERAGGSSVIPSOWHIP
2025116.8555022.1181.66
2026147.08184240.2381.62
2 Seasons257.00239263.0561.63
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.

2026-09-01
16
Pitching
percentile
Pitching9 metrics
26
Arsenal5 metrics
31
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.

2026-09-01
Pitching · percentile strip
WHIP1.65
8
ERA7.08
4
BB%12.9%
13
K%20.4%
38
xwOBA allowed0.350
15
Barrel allowed9.9%
16
Fastball velo95.0
57
Hard-hit allowed37.2%
58
Whiff%19.8%
24
Mithrandir+

Stuff+ and arsenal context

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

2026-09-01
Changeup Stuff+91
4
Curveball Stuff+102
44
Fastball Stuff+92
6
Mithrandir Stuff+97
15
Slider Stuff+106
85
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 Barnett, Mason · Live snapshot series; true 50/100 PA windows require PA-level logs LG AVG 0.313 0.350 2026-08-21: 0.3492026-08-22: 0.3492026-08-23: 0.3492026-08-24: 0.3492026-08-25: 0.3492026-08-26: 0.3492026-08-27: 0.3492026-08-28: 0.3492026-08-29: 0.3492026-08-30: 0.3502026-08-31: 0.3502026-09-01: 0.350 2026-08-21 2026-09-01 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 49%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 Barnett, Mason · Aggregate zone metrics; not pitch-by-pitch locations Edge: 40%40%Zone: 44%44%Whiff: 20%20%Called strike: 16%16%First pitch strike: 45%45%Hard hit allowed: 37%37% 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 Barnett, Mason · 2026 arsenal snapshot 4-Seam Fastball: 48.7%Slider: 19.5%Sweeper: 14.8%Curveball: 10.0%Changeup: 7.0% FF49% · 95 mphprimary pitch FF 49%SL 20%ST 15%CU 10%CH 7% MITHRANDIR · CHARTS
Mithrandir Metrics PITCH MOVEMENT Parameterized Mithrandir chart rendered as SVG for templates and exports. Pitch Arsenal Barnett, Mason · 2026 arsenal snapshot 15″30″45″60″ 4-Seam Fastball: 49% usage, 0″ horizontal break, 15″ drop, 95.0 mphFF95 mphSlider: 20% usage, 1″ horizontal break, 38″ drop, 87.3 mphSL87 mphSweeper: 15% usage, 12″ horizontal break, 44″ drop, 83.5 mphST84 mphCurveball: 10% usage, 5″ horizontal break, 59″ drop, 79.2 mphCU79 mphChangeup: 7% usage, 8″ horizontal break, 37″ drop, 85.4 mphCH85 mph less drop ↑ more drop ↓ · horizontal break ↔ · dot size = usage · break incl. gravity MITHRANDIR · CHARTS
PitchUsagePitchesStuff+Status
FB 48.3% 154 92 limited sample
SL 33.5% 107 106 limited sample
CB 11.0% 35 102 limited sample
CH 7.2% 23 91 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--

positive regression

Regression watch

Unlucky so far. Better days ahead.

1.3σ gap
wOBA-against (actual)0.393
xwOBA-against (deserved)0.350

Barnett’s wOBA-against sits at 0.393, but the quality of contact underneath says it should be 0.350 — a gap of 0.043, 1.3 standard deviations from the MLB norm over 40 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
Pitching72026-08-174-Seam Fastball played up through FF/SL tunnel quality
Projection links / recent games

Available detail

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