Mithrandir Metrics
Pitcher projection 2026 Refreshed Oct 15 06:00 AM ET
Pitcher projection / LAD · 2026

Stewart, Brock

Run-prevention profile built on workable command

Primary
25.5% K%
Range
19.0% to 34.5%
Live Δ
yes
Team LAD Archetype Offspeed mix artist Age 35 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.

2026-10-15
76
Pitching
percentile
Pitching9 metrics
78
Arsenal6 metrics
68
Rolling projection

Preseason / current pace / Bayesian update

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

2026-10-15
ERA preseason3.13
ERA current pace2.70
ERA rolling p502.99
Observed weight32%
ERA
1.32 2.11 2.99 3.87 4.66
FIP
2.30 2.80 3.35 3.90 4.39
K%
18.6% 21.2% 24.1% 27.0% 29.6%
BB%
6.0% 7.5% 9.2% 10.8% 12.3%
Current percentile strip

Actual percentile with projection tick

100th = best in MLB.

2026-10-15
Pitching · percentile strip
WHIP1.06
89
ERA2.70
88
BB%9.6%
42
K%23.7%
63
xwOBA allowed0.250
97 +35 vs proj
Barrel allowed4.1%
93 +21 vs proj
Fastball velo95.6
68
Hard-hit allowed29.7%
97
Whiff%25.2%
70
Mithrandir+

Stuff+ and arsenal context

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

2026-10-15
Changeup Stuff+109
94
Cutter Stuff+95
6
Fastball Stuff+105
68
Mithrandir Stuff+105
81
Sinker Stuff+105
72
Slider Stuff+107
85
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 36%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

12 snapshots
Mithrandir Metrics ROLLING XWOBA LINE Parameterized Mithrandir chart rendered as SVG for templates and exports. season=2026 Rolling xwOBA allowed Stewart, Brock · Live snapshot series; true 50/100 PA windows require PA-level logs LG AVG 0.314 0.250 2026-10-04: 0.2442026-10-05: 0.2422026-10-06: 0.2422026-10-07: 0.2422026-10-08: 0.2422026-10-09: 0.2422026-10-10: 0.2422026-10-11: 0.2422026-10-12: 0.2422026-10-13: 0.2502026-10-14: 0.2502026-10-15: 0.250 2026-10-04 2026-10-15 xwOBA allowed MITHRANDIR · CHARTS
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: 37%37%Zone: 46%46%Whiff: 25%25%Called strike: 16%16%First pitch strike: 48%48%Hard hit allowed: 30%30% 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 Stewart, Brock · 2026 arsenal snapshot 4-Seam Fastball: 35.9%Sweeper: 25.2%Sinker: 15.4%Changeup: 14.2%Cutter: 9.3% FF36% · 96 mphprimary pitch FF 36%ST 25%SI 15%CH 14%FC 9% MITHRANDIR · CHARTS
Mithrandir Metrics PITCH MOVEMENT Parameterized Mithrandir chart rendered as SVG for templates and exports. Pitch Arsenal Stewart, Brock · 2026 arsenal snapshot 12″24″36″48″ 4-Seam Fastball: 36% usage, 0″ horizontal break, 16″ drop, 95.9 mphFF96 mphSweeper: 25% usage, 12″ horizontal break, 36″ drop, 83.9 mphST84 mphSinker: 15% usage, 15″ horizontal break, 27″ drop, 94.8 mphSI95 mphChangeup: 14% usage, 15″ horizontal break, 35″ drop, 89.3 mphCH89 mphCutter: 9% usage, 2″ horizontal break, 24″ drop, 92.4 mphFC92 mph less drop ↑ more drop ↓ · horizontal break ↔ · dot size = usage · break incl. gravity MITHRANDIR · CHARTS
PitchUsagePitchesStuff+Status
FB 41.4% 82 105 limited sample
SL 25.3% 50 107 limited sample
SI 13.1% 26 105 limited sample
CH 12.1% 24 109 limited sample
FC 8.1% 16 95 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).
pitcher
2
templated note
Volume stays relief-shaped even when the bat-miss traits are strong.
pitcher
3
templated note
Home park slightly inflates the home-run risk band.
pitcher
4
templated note
Primary mix entering the season: 4-Seam Fastball 54%, Sweeper 14%, Sinker 11%.
pitcher
Live context

Current-season signal

ERA Δ-0.84
K% Δ-0.020
Sample28.3 IP
Projection table

Point projection and range

MetricPointRangeHalf-width
Innings35.0----
Batters Faced149----
K%25.5%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%
ERA3.631.34 to 5.79+/- 2.22
FIP3.232.36 to 5.16+/- 1.40
WHIP1.2140.968 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%