Mithrandir Metrics
Player San Francisco Giants Refreshed Jun 12 06:00 AM ET
Player profile / San Francisco Giants

Reiver Sanmartin

P · Bats/Throws L/L · 6' 1", 188 lb · Age 30

Cards
0
Modules
0
Live Δ
--
Club San Francisco Giants Position P Roster Active Status Healthy / active roster
Traditional line

Season by season

3D Pitch Lab Projections
WLERAGGSSVIPSOWHIP
2023107.07140014.0131.93
2025000.001001.221.80
2026104.501002.021.00
5 Seasons845.63636086.1751.63
Rolling projection

Preseason / current pace / Bayesian update

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

2026-06-12
ERA preseason4.10
ERA current pace4.50
ERA rolling p504.11
Observed weight3%
ERA
1.63 2.81 4.11 5.42 6.59
FIP
2.07 2.99 4.01 5.03 5.95
K%
13.3% 16.7% 20.5% 24.3% 27.7%
BB%
4.0% 5.8% 7.8% 9.8% 11.6%
Live percentile strip

Current traits vs projection tick

100th = best in MLB.

2026-06-12
Insufficient sample

Percentile strips appear after the current-season sample clears the threshold.

Mithrandir+

Stuff+ and arsenal context

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

2026-06-12
Stuff+ pending

No current Stuff+ row is available for this pitcher in the latest daily scoring artifact.

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.

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 Sanmartin, Reiver · Aggregate zone metrics; not pitch-by-pitch locations Edge: 45%45%Zone: 48%48%Whiff: 18%18%Called strike: 26%26%First pitch strike: 75%75%Hard hit allowed: 50%50% Dashed border = aggregate mixed-batter zone proxy MITHRANDIR · CHARTS
Pitch arsenal

Usage mix, movement map, and Stuff+ composition

2025 pitch-level arsenal aggregates; current season takes over after 100 tracked pitches across at least 2 pitch types.

Watch the pitches in 3D →

2025
Mithrandir Metrics PITCH ARSENAL DONUT Parameterized Mithrandir chart rendered as SVG for templates and exports. Pitch Arsenal Sanmartin, Reiver · 2025 arsenal snapshot 4-Seam Fastball: 35.3%Changeup: 33.3%Sinker: 19.6%Slider: 11.8% FF35% · 92 mphprimary pitch FF 35%CH 33%SI 20%SL 12% MITHRANDIR · CHARTS
Mithrandir Metrics PITCH MOVEMENT Parameterized Mithrandir chart rendered as SVG for templates and exports. Pitch Arsenal Sanmartin, Reiver · 2025 arsenal snapshot 9″18″27″36″ 4-Seam Fastball: 35% usage, 2″ horizontal break, 21″ drop, 91.8 mphFF92 mphChangeup: 33% usage, 19″ horizontal break, 34″ drop, 87.6 mphCH88 mphSinker: 20% usage, 12″ horizontal break, 27″ drop, 92.1 mphSI92 mphSlider: 12% usage, 1″ horizontal break, 36″ drop, 83.9 mphSL84 mph less drop ↑ more drop ↓ · horizontal break ↔ · dot size = usage · break incl. gravity MITHRANDIR · CHARTS
Reference layer

Current snapshot

Age30
Height6' 1"
Weight188 lb
Debut2021-09-27
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 | 4.00 ERAProjection