Mithrandir Metrics
Player Round Rock Express Refreshed Jun 1 06:00 AM ET
Player profile / Round Rock Express

Gavin Collyer

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

Cards
0
Modules
0
Live Δ
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Club Round Rock Express Position P Roster Reassigned to Minors Status Out / inactive
Rolling projection

Preseason / current pace / Bayesian update

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

Pending

Rolling player projection appears after current-season Statcast and projection joins refresh.

Live percentile strip

Current traits vs 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; missing coverage is shown explicitly.

2026-06-01
Mithrandir Stuff+99
30
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.

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.

4Pitches 2026Season 36%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 Collyer, Gavin · Aggregate zone metrics; not pitch-by-pitch locations Edge: 37%37%Zone: 46%46%Whiff: 23%23%Called strike: 19%19%First pitch strike: 42%42%Hard hit allowed: 22%22% 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 Collyer, Gavin · 2026 arsenal snapshot Cutter: 36.0%Sweeper: 24.1%4-Seam Fastball: 21.2%Sinker: 18.7% MIX FC 36%ST 24%FF 21%SI 19% MITHRANDIR · CHARTS
Mithrandir Metrics PITCH MOVEMENT Parameterized Mithrandir chart rendered as SVG for templates and exports. Pitch Arsenal Collyer, Gavin · 2026 arsenal snapshot FC: HB -0.0, IVB 2.5FCST: HB 0.0, IVB 2.7STFF: HB -0.4, IVB 1.3FFSI: HB 1.0, IVB 2.3SI horizontal break IVB MITHRANDIR · CHARTS
PitchUsagePitchesStuff+Status
FC 36.9% 106 102 limited sample
SL 24.7% 71 103 limited sample
FB 20.6% 59 91 limited sample
SI 17.8% 51 97 limited sample
Method note

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

Reference layer

Current snapshot

Age25
Height6' 1"
Weight165 lb
Debut2026-04-15
Live layer

Delta / regression

No Live State delta is available for this profile yet.

Mithrandir coverage

Module shelf

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

Available detail

2026-04-17 @ SEA0 ER / 2 K1.1 IP
2026-04-15 @ ATH0 ER / 1 K0.1 IP