Mithrandir Metrics
Player Miami Marlins Refreshed Jun 1 06:00 AM ET
Player profile / Miami Marlins

John King

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

Cards
0
Modules
0
Live Δ
yes
Club Miami Marlins 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 preseason3.63
ERA current pace1.93
ERA rolling p503.13
Observed weight30%
ERA
1.51 2.28 3.13 3.97 4.74
FIP
3.16 3.64 4.18 4.72 5.20
K%
13.6% 15.6% 17.9% 20.1% 22.1%
BB%
5.0% 6.2% 7.5% 8.8% 10.0%
Live percentile strip

Current traits vs projection tick

100th = best in MLB.

2026-06-01
Pitching · percentile strip
BB%8.9%
47 -31 vs proj
Barrel allowed7.5%
54
Fastball velo90.6
6
Hard-hit allowed31.3%
90
K%20.8%
38 +29 vs proj
Whiff%20.8%
31
xwOBA allowed0.287
74 +32 vs proj
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+100
32
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 King, John · Live snapshot series; true 50/100 PA windows require PA-level logs LG AVG 0.314 2026-05-17: 0.2702026-05-19: 0.2602026-05-21: 0.2562026-05-23: 0.2562026-05-24: 0.2562026-05-25: 0.2702026-05-26: 0.2702026-05-28: 0.2702026-05-29: 0.2702026-05-30: 0.2702026-05-31: 0.2702026-06-01: 0.287 2026-05-17 2026-06-01 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.

6Pitches 2026Season 30%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 King, John · Aggregate zone metrics; not pitch-by-pitch locations Edge: 37%37%Zone: 47%47%Whiff: 21%21%Called strike: 21%21%First pitch strike: 50%50%Hard hit allowed: 31%31% 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 King, John · 2026 arsenal snapshot Sinker: 30.5%Slider: 23.8%Changeup: 19.1%Sweeper: 13.9%Curveball: 9.4%4-Seam Fastball: 3.3% MIX SI 30%SL 24%CH 19%ST 14%CU 9%FF 3% MITHRANDIR · CHARTS
Mithrandir Metrics PITCH MOVEMENT Parameterized Mithrandir chart rendered as SVG for templates and exports. Pitch Arsenal King, John · 2026 arsenal snapshot SI: HB -0.0, IVB 2.7SISL: HB -0.2, IVB 3.5SLCH: HB -0.2, IVB 3.5CHST: HB -0.4, IVB 3.6STCU: HB 0.3, IVB 4.6CUFF: HB -0.5, IVB 1.9FF horizontal break IVB MITHRANDIR · CHARTS
PitchUsagePitchesStuff+Status
SL 38.3% 128 107 limited sample
SI 31.1% 104 94 limited sample
CH 19.5% 65 95 limited sample
CB 8.4% 28 110 limited sample
FB 2.7% 9 82 limited sample
Method note

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

Reference layer

Current snapshot

Age31
Height6' 2"
Weight215 lb
Debut2020-09-04
Live layer

Delta / regression

ERA Δ-2.51
K% Δ+0.055
Mithrandir coverage

Module shelf

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

Available detail

Pitcher Projections 202615.3% K | 4.44 ERAProjection
2026-04-17 vs MIL0 ER / 2 K1.1 IP
2026-04-15 @ ATL1 ER / 1 K1.1 IP
2026-04-13 @ ATL0 ER / 0 K0.1 IP
2026-04-11 @ DET0 ER / 2 K1.0 IP
2026-04-07 vs CIN0 ER / 0 K0.2 IP