Mithrandir Metrics
Player San Francisco Giants Refreshed Jun 1 06:00 AM ET
Player profile / San Francisco Giants

Joel Peguero

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

Cards
0
Modules
0
Live Δ
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Club San Francisco Giants Position P Roster Injured 60-Day Status IL-60
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 preseason4.12
ERA current pace2.89
ERA rolling p503.91
Observed weight17%
ERA
1.65 2.72 3.91 5.10 6.17
FIP
2.53 3.07 3.68 4.28 4.82
K%
10.6% 13.7% 17.1% 20.5% 23.6%
BB%
5.3% 6.9% 8.7% 10.5% 12.1%
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+105
77
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.

3Pitches 2026Season 43%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 Peguero, Joel · Aggregate zone metrics; not pitch-by-pitch locations Edge: 42%42%Zone: 51%51%Whiff: 18%18%Called strike: 12%12%First pitch strike: 51%51%Hard hit allowed: 24%24% 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 Peguero, Joel · 2026 arsenal snapshot 4-Seam Fastball: 43.2%Sinker: 33.7%Slider: 23.1% MIX FF 43%SI 34%SL 23% MITHRANDIR · CHARTS
Mithrandir Metrics PITCH MOVEMENT Parameterized Mithrandir chart rendered as SVG for templates and exports. Pitch Arsenal Peguero, Joel · 2026 arsenal snapshot FF: HB -0.1, IVB 1.1FFSI: HB 0.1, IVB 1.6SISL: HB -0.1, IVB 2.3SL horizontal break IVB MITHRANDIR · CHARTS
PitchUsagePitchesStuff+Status
FB 41.7% 65 104 limited sample
SI 36.5% 57 102 limited sample
SL 21.8% 34 103 limited sample
Method note

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

Reference layer

Current snapshot

Age29
Height5' 10"
Weight195 lb
Debut2025-08-21
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

Pitcher Projections 202620.9% K | 4.03 ERAProjection
2026-05-20 @ AZ0 ER / 1 K0.2 IP