Mithrandir Metrics
Pitcher projection 2026 Refreshed Jun 1 06:00 AM ET
Pitcher projection / LAD · 2026

Stewart, Brock

Run-prevention profile built on workable command

Primary
25.6% K%
Range
19.0% to 34.5%
Live Δ
--
Team LAD Archetype Offspeed mix artist Age 35 Status IL-15
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 preseason3.13
ERA current pace0.00
ERA rolling p503.04
Observed weight3%
ERA
0.88 1.90 3.04 4.18 5.20
FIP
1.72 2.36 3.07 3.79 4.43
K%
17.3% 20.8% 24.8% 28.8% 32.4%
BB%
4.9% 6.9% 9.1% 11.3% 13.3%
Current percentile strip

Actual percentile with projection tick

100th = best in MLB.

2026-06-01
Mithrandir+

Stuff+ and arsenal context

Stuff+ appears when the current pitch-event scoring artifact includes this pitcher; Arsenal Decomposition remains descriptive support under Stuff+.

2026-06-01
Mithrandir Stuff+100
35
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 2025Season 54%Top usage
ride armside gloveside +Arsenal gap +Shape contrast
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.

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 Stewart, Brock · Aggregate zone metrics; not pitch-by-pitch locations Edge: 43%43%Zone: 39%39%Whiff: 45%45%Called strike: 18%18%First pitch strike: 43%43%Hard hit allowed: 0%0% Dashed border = aggregate mixed-batter zone proxy MITHRANDIR · CHARTS
Pitch arsenal

Usage mix, movement map, and Stuff+ composition

2025 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.

2025
Mithrandir Metrics PITCH ARSENAL DONUT Parameterized Mithrandir chart rendered as SVG for templates and exports. Pitch Arsenal Stewart, Brock · 2025 arsenal snapshot 4-Seam Fastball: 54.4%Sweeper: 14.3%Sinker: 11.0%Changeup: 10.8%Cutter: 9.5% MIX FF 54%ST 14%SI 11%CH 11%FC 10% MITHRANDIR · CHARTS
Mithrandir Metrics PITCH MOVEMENT Parameterized Mithrandir chart rendered as SVG for templates and exports. Pitch Arsenal Stewart, Brock · 2025 arsenal snapshot FF: HB -0.1, IVB 1.3FFST: HB -1.0, IVB 3.0STSI: HB 1.1, IVB 2.0SICH: HB -1.1, IVB 2.6CHFC: HB 0.0, IVB 2.0FC horizontal break IVB MITHRANDIR · CHARTS
PitchUsagePitchesStuff+Status
FB 53.6% 15 95 limited sample
SL 25.0% 7 101 limited sample
SI 10.7% 3 115 limited sample
CH 10.7% 3 109 limited sample
Method note

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

Model read

Projection notes

1
templated note
Needs the arsenal to hold up against lefties (0.257 vs 0.236 xwOBA allowed split).
2
templated note
Volume stays relief-shaped even when the bat-miss traits are strong.
3
templated note
Home park slightly inflates the home-run risk band.
4
templated note
Primary mix entering the season: 4-Seam Fastball 54%, Sweeper 14%, Sinker 11%.
Live context

Current-season signal

No Live State delta is available for this player yet.

Projection table

Point projection and range

MetricPointRangeHalf-width
Innings33.9----
Batters Faced145----
K%25.6%19.0% to 34.5%+/- 7.7%
BB%9.3%5.1% to 13.7%+/- 4.3%
Whiff%25.7%21.1% to 32.9%+/- 5.9%
HR/91.140.47 to 1.89+/- 0.71
xwOBA Against0.3030.217 to 0.334+/- 0.058
Barrel% Allowed6.2%1.8% to 9.4%+/- 3.8%
ERA3.541.34 to 5.79+/- 2.22
FIP3.232.37 to 5.16+/- 1.39
WHIP1.2100.968 to 1.636+/- 0.334
Platoon / Shape
vs LHH

389 career BF

xwOBA0.257
K%22.9%
BB%9.2%
Barrel3.9%
vs RHH

489 career BF

xwOBA0.236
K%26.2%
BB%7.3%
Barrel3.7%