Mithrandir Metrics
Player Lehigh Valley IronPigs Refreshed Jun 12 06:00 AM ET
Player profile / Lehigh Valley IronPigs

Seth Johnson

P · Bats/Throws R/R · 6' 1", 205 lb · Age 27

Cards
1
Modules
1
Live Δ
--
Club Lehigh Valley IronPigs Position P Roster Reassigned to Minors Status Out / inactive
Traditional line

Season by season

3D Pitch Lab Projections
WLERAGGSSVIPSOWHIP
20240134.711102.104.71
2025114.26100012.2171.18
2026007.363003.242.18
3 Seasons128.68141018.2211.82
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.

2026-06-12
43
Pitching
percentile
Arsenal4 metrics
43
Rolling projection

Preseason / current pace / Bayesian update

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

2026-06-12
ERA preseason3.99
ERA current pace7.36
ERA rolling p504.35
Observed weight11%
ERA
2.19 3.22 4.35 5.49 6.51
FIP
2.07 2.78 3.58 4.38 5.09
K%
17.2% 20.8% 24.8% 28.8% 32.3%
BB%
4.5% 6.3% 8.3% 10.4% 12.2%
Live percentile strip

Current traits vs projection tick

100th = best in MLB.

2026-06-12
Mithrandir+

Stuff+ and arsenal context

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

2026-06-12
Curveball Stuff+95
0
Fastball Stuff+99
28
Mithrandir Stuff+101
44
Slider Stuff+113
99
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.

5Pitches 2026Season 43%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 Johnson, Seth · Aggregate zone metrics; not pitch-by-pitch locations Edge: 44%44%Zone: 46%46%Whiff: 19%19%Called strike: 14%14%First pitch strike: 41%41%Hard hit allowed: 35%35% 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 Johnson, Seth · 2026 arsenal snapshot 4-Seam Fastball: 42.9%Slider: 31.1%Curveball: 10.9%Split-Finger: 7.6%Sinker: 7.6% FF43% · 97 mphprimary pitch FF 43%SL 31%CU 11%FS 8%SI 8% MITHRANDIR · CHARTS
Mithrandir Metrics PITCH MOVEMENT Parameterized Mithrandir chart rendered as SVG for templates and exports. Pitch Arsenal Johnson, Seth · 2026 arsenal snapshot 15″30″45″60″ 4-Seam Fastball: 43% usage, 1″ horizontal break, 11″ drop, 97.5 mphFF97 mphSlider: 31% usage, 2″ horizontal break, 32″ drop, 88.6 mphSL89 mphCurveball: 11% usage, 1″ horizontal break, 50″ drop, 81.3 mphCU81 mphSplit-Finger: 8% usage, 10″ horizontal break, 28″ drop, 91.3 mphFS91 mphSinker: 8% usage, 15″ horizontal break, 19″ drop, 96.0 mphSI96 mph less drop ↑ more drop ↓ · horizontal break ↔ · dot size = usage · break incl. gravity MITHRANDIR · CHARTS
PitchUsagePitchesStuff+Status
FB 46.5% 40 99 limited sample
SL 34.9% 30 113 limited sample
CB 11.6% 10 95 limited sample
SI 7.0% 6 81 limited sample
Method note

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

Reference layer

Current snapshot

Age27
Height6' 1"
Weight205 lb
Debut2024-09-08
Live layer

Delta / regression

No Live State delta is available for this profile yet.

Mithrandir coverage

Module shelf

ModuleCardsLatestSignal
Pitching12026-02-24Stuff and strike quality carried the outing
Projection links / recent games

Available detail

Pitcher Projections 202624.7% K | 3.88 ERAProjection
2026-04-20 @ CHC0 ER / 2 K1.0 IP
2026-04-13 vs CHC3 ER / 1 K1.2 IP