Mithrandir Metrics
Player Sacramento River Cats Refreshed Jul 17 06:00 AM ET
Player profile / Sacramento River Cats

Tristan Beck

P · Bats/Throws R/R · 6' 4", 200 lb · Age 30

Cards
0
Modules
0
Live Δ
--
Club Sacramento River Cats Position P Roster Reassigned to Minors Status Out / inactive
Traditional line

Season by season

3D Pitch Lab Projections
WLERAGGSSVIPSOWHIP
2024001.6971016.0141.13
2025104.61311256.2411.11
2026006.7580110.251.41
4 Seasons434.127955168.11281.19
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.

2026-07-17
86
Pitching
percentile
Arsenal3 metrics
86
Rolling projection

Preseason / current pace / Bayesian update

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

2026-07-17
ERA preseason4.23
ERA current pace6.75
ERA rolling p504.71
Observed weight19%
ERA
3.25 3.94 4.71 5.48 6.17
FIP
3.85 4.10 4.38 4.65 4.90
K%
12.6% 14.7% 17.2% 19.6% 21.7%
BB%
4.0% 5.0% 6.2% 7.4% 8.5%
Live percentile strip

Current traits vs projection tick

100th = best in MLB.

2026-07-17
Mithrandir+

Stuff+ and arsenal context

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

2026-07-17
Fastball Stuff+105
69
Mithrandir Stuff+109
96
Slider Stuff+110
94
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 39%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 Beck, Tristan · Aggregate zone metrics; not pitch-by-pitch locations Edge: 36%36%Zone: 50%50%Whiff: 19%19%Called strike: 14%14%First pitch strike: 39%39%Hard hit allowed: 41%41% 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 Beck, Tristan · 2026 arsenal snapshot Sweeper: 39.0%4-Seam Fastball: 35.6%Slider: 20.5%Curveball: 4.9% ST39% · 83 mphprimary pitch ST 39%FF 36%SL 20%CU 5% MITHRANDIR · CHARTS
Mithrandir Metrics PITCH MOVEMENT Parameterized Mithrandir chart rendered as SVG for templates and exports. Pitch Arsenal Beck, Tristan · 2026 arsenal snapshot 15″30″45″60″ Sweeper: 39% usage, 2″ horizontal break, 41″ drop, 82.7 mphST83 mph4-Seam Fastball: 36% usage, 2″ horizontal break, 15″ drop, 94.4 mphFF94 mphSlider: 20% usage, 0″ horizontal break, 31″ drop, 88.8 mphSL89 mphCurveball: 5% usage, 8″ horizontal break, 54″ drop, 81.9 mphCU82 mph less drop ↑ more drop ↓ · horizontal break ↔ · dot size = usage · break incl. gravity MITHRANDIR · CHARTS
PitchUsagePitchesStuff+Status
SL 63.4% 64 110 limited sample
FB 33.7% 34 105 limited sample
CB 3.0% 3 111 limited sample
Method note

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

Reference layer

Current snapshot

Age30
Height6' 4"
Weight200 lb
Debut2023-04-20
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 202618.7% K | 4.48 ERAProjection
2026-03-20 @ TEX0 ER / 0 K1.0 IP