Mithrandir Metrics
Player Miami Marlins Refreshed Jun 16 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
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.

2026-06-16
72
Pitching
percentile
Pitching9 metrics
59
Arsenal5 metrics
48
Rolling projection

Preseason / current pace / Bayesian update

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

2026-06-16
ERA preseason3.63
ERA current pace2.22
ERA rolling p503.17
Observed weight33%
ERA
1.59 2.34 3.17 4.00 4.75
FIP
3.10 3.57 4.10 4.62 5.10
K%
13.5% 15.5% 17.7% 19.8% 21.8%
BB%
4.8% 5.9% 7.2% 8.5% 9.6%
Live percentile strip

Current traits vs projection tick

100th = best in MLB.

2026-06-16
Pitching · percentile strip
WHIP0.74
98
ERA2.22
88
BB%7.8%
64
K%19.8%
32 +24 vs proj
xwOBA allowed0.282
80 +39 vs proj
Barrel allowed7.6%
51
Fastball velo90.5
5
Hard-hit allowed31.6%
90
Whiff%19.7%
23
Mithrandir+

Stuff+ and arsenal context

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

2026-06-16
Changeup Stuff+95
12
Curveball Stuff+108
100
Mithrandir Stuff+100
34
Sinker Stuff+94
11
Slider Stuff+107
83
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 0.282 2026-06-05: 0.2802026-06-06: 0.2802026-06-07: 0.2802026-06-08: 0.2832026-06-09: 0.2832026-06-10: 0.2832026-06-11: 0.2832026-06-12: 0.2832026-06-13: 0.2832026-06-14: 0.2762026-06-15: 0.2822026-06-16: 0.282 2026-06-05 2026-06-16 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 32%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: 36%36%Zone: 48%48%Whiff: 20%20%Called strike: 20%20%First pitch strike: 47%47%Hard hit allowed: 32%32% 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 King, John · 2026 arsenal snapshot Sinker: 31.7%Slider: 23.3%Changeup: 19.3%Sweeper: 12.9%Curveball: 10.0%4-Seam Fastball: 2.9% SI32% · 91 mphprimary pitch SI 32%SL 23%CH 19%ST 13%CU 10%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 15″30″45″60″ Sinker: 32% usage, 0″ horizontal break, 32″ drop, 90.5 mphSI91 mphSlider: 23% usage, 2″ horizontal break, 41″ drop, 82.3 mphSL82 mphChangeup: 19% usage, 2″ horizontal break, 41″ drop, 83.2 mphCH83 mphSweeper: 13% usage, 4″ horizontal break, 44″ drop, 81.4 mphST81 mphCurveball: 10% usage, 2″ horizontal break, 56″ drop, 78.9 mphCU79 mph4-Seam Fastball: 3% usage, 6″ horizontal break, 23″ drop, 90.4 mphFF90 mph less drop ↑ more drop ↓ · horizontal break ↔ · dot size = usage · break incl. gravity 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% 28 108 limited sample
FB 2.7% 9 83 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-2.22
K% Δ+0.045

negative regression

Regression watch

Running hot. Expect some cooling.

-1.2σ gap
wOBA-against (actual)0.237
xwOBA-against (deserved)0.282

King’s wOBA-against sits at 0.237, but the quality of contact underneath says it should be 0.282 — a gap of 0.045, -1.2 standard deviations from the MLB norm over 31 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
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