Mithrandir Metrics
Player Chicago White Sox Refreshed Jun 1 06:00 AM ET
Player profile / Chicago White Sox

Sean Burke

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

Cards
10
Modules
1
Live Δ
yes
Club Chicago White Sox 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 preseason3.72
ERA current pace3.90
ERA rolling p503.82
Observed weight56%
ERA
2.68 3.22 3.82 4.42 4.96
FIP
2.91 3.26 3.64 4.03 4.38
K%
20.1% 21.5% 23.2% 24.8% 26.3%
BB%
6.3% 7.0% 7.8% 8.7% 9.4%
Live percentile strip

Current traits vs projection tick

100th = best in MLB.

2026-06-01
Pitching · percentile strip
BB%7.1%
73 +34 vs proj
Barrel allowed7.1%
60 +23 vs proj
Fastball velo94.3
50
Hard-hit allowed36.5%
68
K%22.5%
53
Whiff%18.8%
18 -42 vs proj
xwOBA allowed0.302
61
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+108
90
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 Burke, Sean · Live snapshot series; true 50/100 PA windows require PA-level logs LG AVG 0.314 2026-05-17: 0.3192026-05-19: 0.3192026-05-21: 0.3192026-05-23: 0.3202026-05-24: 0.3202026-05-25: 0.3202026-05-26: 0.3202026-05-28: 0.3092026-05-29: 0.3082026-05-30: 0.3082026-05-31: 0.3082026-06-01: 0.302 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.

7Pitches 2026Season 38%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 Burke, Sean · Aggregate zone metrics; not pitch-by-pitch locations Edge: 38%38%Zone: 50%50%Whiff: 19%19%Called strike: 19%19%First pitch strike: 52%52%Hard hit allowed: 36%36% 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 Burke, Sean · 2026 arsenal snapshot 4-Seam Fastball: 38.1%Knuckle Curve: 21.3%Slider: 16.5%Sinker: 14.5%Cutter: 5.3%Changeup: 4.1% MIX FF 38%KC 21%SL 17%SI 15%FC 5%CH 4% MITHRANDIR · CHARTS
Mithrandir Metrics PITCH MOVEMENT Parameterized Mithrandir chart rendered as SVG for templates and exports. Pitch Arsenal Burke, Sean · 2026 arsenal snapshot FF: HB -0.2, IVB 1.0FFKC: HB 0.2, IVB 4.7KCSL: HB -0.2, IVB 2.6SLSI: HB 0.1, IVB 1.3SIFC: HB 0.1, IVB 1.8FCCH: HB -1.1, IVB 2.3CHCS: HB 0.3, IVB 5.2CS horizontal break IVB MITHRANDIR · CHARTS
PitchUsagePitchesStuff+Status
FB 37.3% 398 110 qualified
CB 22.1% 236 103 qualified
SL 16.3% 174 108 limited sample
SI 15.7% 167 101 limited sample
FC 5.0% 53 107 limited sample
CH 3.6% 38 107 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' 6"
Weight240 lb
Debut2024-09-10
Live layer

Delta / regression

ERA Δ-0.71
K% Δ-0.008

positive regression

Mithrandir coverage

Module shelf

ModuleCardsLatestSignal
Pitching102026-05-26Four-Seam Fastball played up through SI/SL tunnel quality
Projection links / recent games

Available detail

Pitcher Projections 202623.3% K | 4.61 ERAProjection
2026-05-20 @ SEA2 ER / 5 K4.2 IP
2026-04-15 vs TB4 ER / 2 K5.1 IP
2026-04-08 vs BAL2 ER / 3 K5.0 IP
2026-04-03 vs TOR1 ER / 7 K6.0 IP