Mithrandir Metrics
Player Kansas City Royals Refreshed Jun 1 06:00 AM ET
Player profile / Kansas City Royals

Mason Black

P profile with live context, projection links, and Mithrandir card history when available.

Cards
0
Modules
0
Live Δ
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Club Kansas City Royals Position P Roster Active Status Healthy / active roster
Rolling projection

Preseason / current pace / Bayesian update

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

2026-06-01
ERA preseason4.03
ERA current pace2.70
ERA rolling p503.87
Observed weight12%
ERA
1.73 2.75 3.87 5.00 6.01
FIP
2.22 3.05 3.98 4.91 5.75
K%
12.8% 16.1% 19.7% 23.4% 26.7%
BB%
4.1% 5.7% 7.5% 9.3% 11.0%
Live percentile strip

Current traits vs projection tick

100th = best in MLB.

2026-06-01
Mithrandir+

Stuff+ and arsenal context

Stuff+ appears when the current pitch-event scoring artifact includes this pitcher; missing coverage is shown explicitly.

2026-06-01
Mithrandir Stuff+104
65
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.

6Pitches 2026Season 35%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 Black, Mason · Aggregate zone metrics; not pitch-by-pitch locations Edge: 36%36%Zone: 46%46%Whiff: 21%21%Called strike: 17%17%First pitch strike: 52%52%Hard hit allowed: 45%45% 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.

2026
Mithrandir Metrics PITCH ARSENAL DONUT Parameterized Mithrandir chart rendered as SVG for templates and exports. Pitch Arsenal Black, Mason · 2026 arsenal snapshot Sweeper: 35.2%Sinker: 25.5%4-Seam Fastball: 15.9%Cutter: 9.7%Changeup: 6.9%Slider: 6.9% MIX ST 35%SI 26%FF 16%FC 10%CH 7%SL 7% MITHRANDIR · CHARTS
Mithrandir Metrics PITCH MOVEMENT Parameterized Mithrandir chart rendered as SVG for templates and exports. Pitch Arsenal Black, Mason · 2026 arsenal snapshot ST: HB 0.1, IVB 3.7STSI: HB 0.5, IVB 1.8SIFF: HB -0.5, IVB 1.3FFFC: HB -0.0, IVB 2.1FCCH: HB -1.4, IVB 2.8CHSL: HB 0.0, IVB 3.0SL horizontal break IVB MITHRANDIR · CHARTS
PitchUsagePitchesStuff+Status
SL 42.1% 61 110 limited sample
SI 25.5% 37 102 limited sample
FB 15.9% 23 101 limited sample
FC 9.7% 14 78 limited sample
CH 6.9% 10 110 limited sample
Method note

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

Reference layer

Current snapshot

Age26
Height6' 3"
Weight228 lb
Debut2024-05-06
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 202621.4% K | 4.34 ERAProjection
2026-03-11 @ CHC0 ER / 2 K2.0 IP