Mithrandir Metrics
Player Scranton/Wilkes-Barre RailRiders Refreshed Jul 16 06:00 AM ET
Player profile / Scranton/Wilkes-Barre RailRiders

Yerry De los Santos

P · Bats/Throws R/R · 6' 3", 230 lb · Age 28

Cards
0
Modules
0
Live Δ
--
Club Scranton/Wilkes-Barre RailRiders Position P Roster Reassigned to Minors Status Out / inactive
Traditional line

Season by season

3D Pitch Lab Projections
WLERAGGSSVIPSOWHIP
2023113.33220024.1181.23
2025013.28250035.2281.51
2026001.045008.271.38
4 Seasons153.53780394.1791.37
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.

2026-07-16
65
Pitching
percentile
Arsenal4 metrics
65
Rolling projection

Preseason / current pace / Bayesian update

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

2026-07-16
ERA preseason3.81
ERA current pace1.04
ERA rolling p503.31
Observed weight18%
ERA
1.51 2.36 3.31 4.26 5.12
FIP
2.28 3.06 3.92 4.78 5.55
K%
13.0% 16.0% 19.3% 22.6% 25.5%
BB%
6.1% 7.7% 9.5% 11.2% 12.8%
Live percentile strip

Current traits vs projection tick

100th = best in MLB.

2026-07-16
Mithrandir+

Stuff+ and arsenal context

How nasty this pitcher's stuff grades in our pitch-level model. Missing coverage is shown explicitly.

2026-07-16
Changeup Stuff+106
76
Fastball Stuff+92
7
Mithrandir Stuff+107
89
Sinker Stuff+107
89
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 58%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: 35%35%Zone: 58%58%Whiff: 14%14%Called strike: 20%20%First pitch strike: 55%55%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.

Watch the pitches in 3D →

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: 57.8%Changeup: 27.1%4-Seam Fastball: 10.6%Slider: 4.5% SI58% · 95 mphprimary pitch SI 58%CH 27%FF 11%SL 5% 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 12″24″36″48″ Sinker: 58% usage, 8″ horizontal break, 24″ drop, 95.4 mphSI95 mphChangeup: 27% usage, 6″ horizontal break, 36″ drop, 87.5 mphCH87 mph4-Seam Fastball: 11% usage, 15″ horizontal break, 20″ drop, 94.9 mphFF95 mphSlider: 5% usage, 3″ horizontal break, 35″ drop, 85.4 mphSL85 mph less drop ↑ more drop ↓ · horizontal break ↔ · dot size = usage · break incl. gravity MITHRANDIR · CHARTS
PitchUsagePitchesStuff+Status
SI 63.2% 72 107 limited sample
CH 23.7% 27 106 limited sample
FB 8.8% 10 92 limited sample
SL 4.4% 5 99 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