Mithrandir Metrics
Player AZ Refreshed Sep 28 06:00 AM ET
Player profile / AZ

Mitch Bratt

Player · Bats/Throws L/L · 6' 1", 215 lb · Age 23

Cards
13
Modules
1
Live Δ
yes
Club AZ Position -- Roster profile Status Out / inactive
Traditional line

Season by season

3D Pitch Lab Projections
WLERAGGSSVIPSOWHIP
2026134.701010044.0301.52
1 Seasons134.701010044.0301.52
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
23
Pitching
percentile
Pitching9 metrics
30
Arsenal6 metrics
40
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
WHIP1.55
17
ERA4.71
33
BB%13.9%
7
K%15.5%
8
xwOBA allowed0.312
50
Barrel allowed6.6%
65
Fastball velo90.9
7
Hard-hit allowed33.8%
83
Whiff%12.8%
1
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
Fastball Stuff+98
19
Changeup Stuff+104
63
Curveball Stuff+105
84
Mithrandir Stuff+99
22
Sinker Stuff+99
28
Slider Stuff+98
24
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 Bratt, Mitch · Live snapshot series; true 50/100 PA windows require PA-level logs LG AVG 0.313 0.312 2026-09-14: 0.3122026-09-18: 0.3122026-09-19: 0.3122026-09-20: 0.3122026-09-21: 0.3122026-09-22: 0.3122026-09-23: 0.3122026-09-24: 0.3122026-09-25: 0.3122026-09-26: 0.3122026-09-27: 0.3122026-09-28: 0.312 2026-09-14 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.

6Pitches 2026Season 47%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 Bratt, Mitch · Aggregate zone metrics; not pitch-by-pitch locations Edge: 42%42%Zone: 49%49%Whiff: 13%13%Called strike: 15%15%First pitch strike: 44%44%Hard hit allowed: 34%34% 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 Bratt, Mitch · 2026 arsenal snapshot 4-Seam Fastball: 46.6%Slurve: 23.3%Changeup: 9.8%Slider: 9.0%Sinker: 7.9%Curveball: 3.6% FF47% · 91 mphprimary pitch FF 47%SV 23%CH 10%SL 9%SI 8%CU 4% MITHRANDIR · CHARTS
Mithrandir Metrics PITCH MOVEMENT Parameterized Mithrandir chart rendered as SVG for templates and exports. Pitch Arsenal Bratt, Mitch · 2026 arsenal snapshot 15″30″45″60″ 4-Seam Fastball: 47% usage, 3″ horizontal break, 18″ drop, 91.0 mphFF91 mphSlurve: 23% usage, 4″ horizontal break, 45″ drop, 79.6 mphSV80 mphChangeup: 10% usage, 14″ horizontal break, 32″ drop, 84.7 mphCH85 mphSlider: 9% usage, 3″ horizontal break, 28″ drop, 86.6 mphSL87 mphSinker: 8% usage, 7″ horizontal break, 22″ drop, 90.8 mphSI91 mphCurveball: 4% usage, 9″ horizontal break, 56″ drop, 76.8 mphCU77 mph less drop ↑ more drop ↓ · horizontal break ↔ · dot size = usage · break incl. gravity MITHRANDIR · CHARTS
PitchUsagePitchesStuff+Status
FB 49.8% 245 98 qualified
SL 30.5% 150 98 limited sample
CH 9.8% 48 104 limited sample
SI 6.9% 34 99 limited sample
CB 3.0% 15 105 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.

1.1σ gap
wOBA-against (actual)0.349
xwOBA-against (deserved)0.312

Bratt’s wOBA-against sits at 0.349, but the quality of contact underneath says it should be 0.312 — a gap of 0.037, 1.1 standard deviations from the MLB norm over 43 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
Pitching132026-08-29Four-Seam Fastball played up through FF/SV tunnel quality
Projection links / recent games

Available detail

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