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

Brett Sullivan

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

Cards
1
Modules
1
Live Δ
yes
Club Colorado Rockies Position C 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
xwOBA preseason0.290
xwOBA current pace0.241
xwOBA rolling p500.275
Observed weight31%
xwOBA
0.220 0.246 0.275 0.304 0.330
wOBA
0.258 0.286 0.318 0.349 0.377
ISO
0.071 0.106 0.144 0.182 0.217
K%
15.9% 18.8% 22.1% 25.4% 28.3%
Live percentile strip

Current traits vs projection tick

100th = best in MLB.

2026-06-02
Hitting · percentile strip
BB%4.0%
8
Barrel%2.0%
14
Bat speed64.5
5
Exit velocity85.8
20
Hard-hit%31.1%
17
K%21.0%
57
xBA0.264
10
xSLG0.365
8
xwOBA0.241
5
Defense · percentile strip
Blocking Runs-0.3 · C
34
Catcher Throwing-0.6 · C
19
Framing Runs-1.8 · C
24
Pop Time2.0 · C
23
Baserunning · percentile strip
Sprint Speed27.9 · C
67
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
Avoids Bad ChasesST 56.8% · rebadged research
15
Avoids Bad TakesHPT 27.3% · rebadged research
30
Correct Decisions61.2% · rebadged research
12
Mithrandir Stuff+71
3
Resists Breaking - horizontalwOBA 0.274 · borderline
78
Resists Breaking - verticalwOBA 0.258 · insufficient sample
94
Resists ChangeupwOBA 0.264 · validated thin sample
84
Resists Cutters + splitterswOBA 0.313 · insufficient sample
93
Resists FastballwOBA 0.331 · validated
67
Resists SinkerwOBA 0.383 · validated
8
SEAGER+ Plate Discipline92
13
Rolling form chart

xwOBA 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 Sullivan, Brett · Live snapshot series; true 50/100 PA windows require PA-level logs LG AVG 0.313 2026-05-19: 0.2412026-05-21: 0.2412026-05-23: 0.2412026-05-24: 0.2412026-05-25: 0.2362026-05-26: 0.2362026-05-28: 0.2402026-05-29: 0.2402026-05-30: 0.2402026-05-31: 0.2402026-06-01: 0.2412026-06-02: 0.241 2026-05-19 2026-06-02 xwOBA 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 64%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 Swing Zone Profile Sullivan, Brett · Aggregate zone metrics; not pitch-by-pitch locations Zone: 49%49%Chase: 38%38%Whiff: 19%19%Zone contact: 88%88%Contact: 81%81%Hard hit: 31%31% 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 Sullivan, Brett · 2026 arsenal snapshot Slider: 64.4%Changeup: 33.9%Curveball: 1.7% MIX SL 64%CH 34%CU 2% MITHRANDIR · CHARTS
Mithrandir Metrics PITCH MOVEMENT Parameterized Mithrandir chart rendered as SVG for templates and exports. Pitch Arsenal Sullivan, Brett · 2026 arsenal snapshot SL: HB 0.0, IVB 5.7SLCH: HB 0.4, IVB 4.0CHCU: HB -0.2, IVB 6.1CU horizontal break IVB MITHRANDIR · CHARTS
PitchUsagePitchesStuff+Status
SL 64.4% 38 75 limited sample
CH 33.9% 20 79 limited sample
CB 1.7% 1 79 limited sample
Method note

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

Reference layer

Current snapshot

Age32
Height5' 11"
Weight190 lb
Debut2023-04-18
Live layer

Delta / regression

xwOBA Δ-0.023
wOBA Δ+0.053

negative regression

Mithrandir coverage

Module shelf

ModuleCardsLatestSignal
Hitting12026-04-29Impact contact was the main driver
Projection links / recent games

Available detail

Hitter Projections 20260.264 xwOBA | 6 HRProjection
2026-05-20 vs TEX0 HR | 0 RBI / 7 Ch | 1 E0-3
2026-04-20 vs LAD0 HR | 0 RBI / 7 Ch | 0 E2-4
2026-04-17 vs LAD0 HR | 0 RBI / 9 Ch | 0 E0-3 | K
2026-04-15 @ HOU0 HR | 0 RBI / 0 Ch | 0 E0-1 | K
2026-04-14 @ HOU0 HR | 0 RBI / 0 Ch | 0 E0-0