Mithrandir Metrics
Player Sacramento River Cats Refreshed Jun 1 06:00 AM ET
Player profile / Sacramento River Cats

Gregory Santos

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

Cards
0
Modules
0
Live Δ
--
Club Sacramento River Cats 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 preseason3.47
ERA current pace3.60
ERA rolling p503.49
Observed weight12%
ERA
0.96 2.16 3.49 4.82 6.01
FIP
2.83 3.40 4.04 4.68 5.25
K%
10.5% 13.8% 17.4% 21.0% 24.2%
BB%
5.3% 7.3% 9.5% 11.7% 13.7%
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+106
84
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 44%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 Santos, Gregory · Aggregate zone metrics; not pitch-by-pitch locations Edge: 39%39%Zone: 52%52%Whiff: 9%9%Called strike: 18%18%First pitch strike: 56%56%Hard hit allowed: 52%52% 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 Santos, Gregory · 2026 arsenal snapshot Slider: 44.2%Sinker: 39.5%4-Seam Fastball: 14.0%Changeup: 2.3% MIX SL 44%SI 40%FF 14%CH 2% MITHRANDIR · CHARTS
Mithrandir Metrics PITCH MOVEMENT Parameterized Mithrandir chart rendered as SVG for templates and exports. Pitch Arsenal Santos, Gregory · 2026 arsenal snapshot SL: HB 0.0, IVB 2.6SLSI: HB 0.4, IVB 1.9SIFF: HB -0.2, IVB 1.5FFCH: HB -1.1, IVB 2.4CH horizontal break IVB MITHRANDIR · CHARTS
PitchUsagePitchesStuff+Status
SL 51.2% 44 108 limited sample
SI 33.7% 29 104 limited sample
FB 12.8% 11 94 limited sample
CH 2.3% 2 97 limited sample
Method note

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

Reference layer

Current snapshot

Age26
Height6' 3"
Weight236 lb
Debut2021-04-22
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 202621.3% K | 3.70 ERAProjection
2026-03-19 @ COL1 ER / 0 K0.1 IP