Mithrandir Metrics
Player Scranton/Wilkes-Barre RailRiders Refreshed Jun 1 06:00 AM ET
Player profile / Scranton/Wilkes-Barre RailRiders

Yerry De los Santos

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

Cards
0
Modules
0
Live Δ
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Club Scranton/Wilkes-Barre RailRiders 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.

2026-06-01
ERA preseason3.81
ERA current pace1.69
ERA rolling p503.54
Observed weight13%
ERA
1.64 2.54 3.54 4.53 5.43
FIP
2.23 3.04 3.94 4.85 5.66
K%
13.5% 16.6% 20.1% 23.6% 26.7%
BB%
6.2% 7.8% 9.7% 11.5% 13.2%
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+109
95
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 62%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 De Los Santos, Yerry · Aggregate zone metrics; not pitch-by-pitch locations Edge: 38%38%Zone: 60%60%Whiff: 17%17%Called strike: 21%21%First pitch strike: 61%61%Hard hit allowed: 40%40% 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 De Los Santos, Yerry · 2026 arsenal snapshot Sinker: 61.5%Changeup: 28.7%4-Seam Fastball: 5.6%Slider: 4.2% MIX SI 62%CH 29%FF 6%SL 4% MITHRANDIR · CHARTS
Mithrandir Metrics PITCH MOVEMENT Parameterized Mithrandir chart rendered as SVG for templates and exports. Pitch Arsenal De Los Santos, Yerry · 2026 arsenal snapshot SI: HB 0.5, IVB 1.9SICH: HB -0.5, IVB 3.1CHFF: HB -1.1, IVB 1.6FFSL: HB -0.2, IVB 2.9SL horizontal break IVB MITHRANDIR · CHARTS
PitchUsagePitchesStuff+Status
SI 66.3% 65 108 limited sample
CH 24.5% 24 105 limited sample
SL 5.1% 5 98 limited sample
FB 4.1% 4 83 limited sample
Method note

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

Reference layer

Current snapshot

Age28
Height6' 3"
Weight230 lb
Debut2022-05-25
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 202620.1% K | 3.82 ERAProjection
2026-04-14 vs LAA1 ER / 1 K2.0 IP