Mithrandir Metrics
Player Athletics Refreshed Jun 2 06:00 AM ET
Player profile / Athletics

Justin Sterner

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

Cards
0
Modules
0
Live Δ
yes
Club Athletics 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.

2026-06-02
ERA preseason3.89
ERA current pace3.81
ERA rolling p503.87
Observed weight33%
ERA
2.61 3.21 3.87 4.53 5.12
FIP
3.06 3.54 4.07 4.60 5.08
K%
20.0% 21.9% 24.0% 26.1% 27.9%
BB%
5.2% 6.3% 7.5% 8.7% 9.7%
Live percentile strip

Current traits vs projection tick

100th = best in MLB.

2026-06-02
Pitching · percentile strip
BB%6.0%
86 +34 vs proj
Barrel allowed6.1%
72 +32 vs proj
Fastball velo93.2
29
Hard-hit allowed47.6%
9
K%23.3%
54
Whiff%27.3%
79
xwOBA allowed0.254
92 +42 vs proj
Mithrandir+

Stuff+ and arsenal context

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

2026-06-02
Mithrandir Stuff+104
69
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 Sterner, Justin · Live snapshot series; true 50/100 PA windows require PA-level logs LG AVG 0.313 2026-05-19: 0.2672026-05-21: 0.2642026-05-23: 0.2602026-05-24: 0.2602026-05-25: 0.2612026-05-26: 0.2612026-05-28: 0.2572026-05-29: 0.2572026-05-30: 0.2572026-05-31: 0.2572026-06-01: 0.2542026-06-02: 0.254 2026-05-19 2026-06-02 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.

3Pitches 2026Season 41%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 Sterner, Justin · Aggregate zone metrics; not pitch-by-pitch locations Edge: 41%41%Zone: 48%48%Whiff: 27%27%Called strike: 13%13%First pitch strike: 47%47%Hard hit allowed: 48%48% 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 Sterner, Justin · 2026 arsenal snapshot 4-Seam Fastball: 40.9%Cutter: 29.9%Sweeper: 29.2% MIX FF 41%FC 30%ST 29% MITHRANDIR · CHARTS
Mithrandir Metrics PITCH MOVEMENT Parameterized Mithrandir chart rendered as SVG for templates and exports. Pitch Arsenal Sterner, Justin · 2026 arsenal snapshot FF: HB -0.0, IVB 1.2FFFC: HB -0.0, IVB 2.4FCST: HB -0.3, IVB 3.2ST horizontal break IVB MITHRANDIR · CHARTS
PitchUsagePitchesStuff+Status
FB 40.6% 171 104 limited sample
FC 30.2% 127 106 limited sample
SL 29.2% 123 97 limited sample
Method note

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

Reference layer

Current snapshot

Age29
Height6' 1"
Weight215 lb
Debut2024-05-31
Live layer

Delta / regression

ERA Δ-0.08
K% Δ-0.013
Mithrandir coverage

Module shelf

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

Available detail

Pitcher Projections 202624.6% K | 3.89 ERAProjection
2026-04-17 vs CWS0 ER / 4 K2.1 IP
2026-04-14 vs TEX0 ER / 1 K0.2 IP
2026-04-11 @ NYM1 ER / 1 K1.0 IP
2026-04-09 @ NYY0 ER / 1 K1.0 IP
2026-04-07 @ NYY0 ER / 1 K2.0 IP