Mithrandir Metrics
Player Sacramento River Cats Refreshed Sep 27 06:00 AM ET
Player profile / Sacramento River Cats

Cesar Perdomo

P · Bats/Throws L/L · 5' 10", 219 lb · Age 24

Cards
4
Modules
1
Live Δ
yes
Club Sacramento River Cats Position P Roster Current MLB team Status Out / inactive
Traditional line

Season by season

3D Pitch Lab Projections
WLERAGGSSVIPSOWHIP
2026013.6554024.2141.38
1 Seasons013.6554024.2141.38
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.

2026-09-27
45
Pitching
percentile
Pitching9 metrics
39
Arsenal4 metrics
55
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.

2026-09-27
Pitching · percentile strip
WHIP1.40
38
ERA3.65
64
BB%6.7%
83
K%13.3%
3
xwOBA allowed0.324
36
Barrel allowed7.2%
53
Fastball velo93.0
27
Hard-hit allowed42.2%
23
Whiff%19.4%
23
Mithrandir+

Stuff+ and arsenal context

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

2026-09-27
Changeup Stuff+109
94
Fastball Stuff+99
29
Mithrandir Stuff+102
46
Slider Stuff+102
49
Rolling form chart

xwOBA allowed snapshot line

Live snapshot series; true 50/100 PA windows require PA-level logs

4 snapshots
Mithrandir Metrics ROLLING XWOBA LINE Parameterized Mithrandir chart rendered as SVG for templates and exports. season=2026 Rolling xwOBA allowed Perdomo, Cesar · Live snapshot series; true 50/100 PA windows require PA-level logs LG AVG 0.313 0.324 2026-09-24: 0.3242026-09-25: 0.3242026-09-26: 0.3242026-09-27: 0.324 2026-09-24 2026-09-27 xwOBA allowed 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 46%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 Perdomo, Cesar · Aggregate zone metrics; not pitch-by-pitch locations Edge: 37%37%Zone: 49%49%Whiff: 19%19%Called strike: 14%14%First pitch strike: 48%48%Hard hit allowed: 42%42% 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 Perdomo, Cesar · 2026 arsenal snapshot 4-Seam Fastball: 46.4%Changeup: 30.4%Slider: 23.2% FF46% · 93 mphprimary pitch FF 46%CH 30%SL 23% MITHRANDIR · CHARTS
Mithrandir Metrics PITCH MOVEMENT Parameterized Mithrandir chart rendered as SVG for templates and exports. Pitch Arsenal Perdomo, Cesar · 2026 arsenal snapshot 9″18″27″36″ 4-Seam Fastball: 46% usage, 2″ horizontal break, 16″ drop, 93.0 mphFF93 mphChangeup: 30% usage, 10″ horizontal break, 31″ drop, 86.8 mphCH87 mphSlider: 23% usage, 0″ horizontal break, 35″ drop, 85.6 mphSL86 mph less drop ↑ more drop ↓ · horizontal break ↔ · dot size = usage · break incl. gravity MITHRANDIR · CHARTS
PitchUsagePitchesStuff+Status
FB 46.4% 174 99 limited sample
CH 30.4% 114 109 limited sample
SL 23.2% 87 102 limited sample
Method note

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

Reference layer

Current snapshot

Age24
Height5' 10"
Weight219 lb
Debut2026-09-01
Live layer

Delta / regression

ERA Δ--
K% Δ--
Mithrandir coverage

Module shelf

ModuleCardsLatestSignal
Pitching42026-09-23Four-Seam Fastball played up through FF/SL tunnel quality
Projection links / recent games

Available detail

No projection links or recent game log rows are available yet.