Mithrandir Metrics
Player San Francisco Giants Refreshed Sep 29 06:00 AM ET
Player profile / San Francisco Giants

Tristan Beck

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

Cards
0
Modules
0
Live Δ
yes
Club San Francisco Giants Position P Roster Current MLB team Status Healthy / active roster
Traditional line

Season by season

3D Pitch Lab Projections
WLERAGGSSVIPSOWHIP
2024001.6971016.0141.13
2025104.61311256.2411.11
2026105.21140119.091.37
4 Seasons534.088555176.21321.19
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.

2026-09-29
41
Pitching
percentile
Pitching9 metrics
39
Arsenal3 metrics
80
Rolling projection

Preseason / current pace / Bayesian update

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

2026-09-29
ERA preseason4.23
ERA current pace5.60
ERA rolling p504.61
Observed weight28%
ERA
3.25 3.90 4.61 5.32 5.97
FIP
3.94 4.17 4.43 4.69 4.92
K%
12.4% 14.3% 16.5% 18.7% 20.6%
BB%
4.3% 5.3% 6.5% 7.6% 8.6%
Live percentile strip

Current traits vs projection tick

100th = best in MLB.

2026-09-29
Pitching · percentile strip
WHIP1.29
57
ERA5.60
15
BB%5.4%
93 +19 vs proj
K%10.8%
0 -27 vs proj
xwOBA allowed0.321
40
Barrel allowed10.4%
12 -20 vs proj
Fastball velo94.8
56
Hard-hit allowed36.4%
66
Whiff%17.2%
9 -26 vs proj
Mithrandir+

Stuff+ and arsenal context

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

2026-09-29
Fastball Stuff+103
57
Mithrandir Stuff+106
86
Slider Stuff+110
96
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 Beck, Tristan · Live snapshot series; true 50/100 PA windows require PA-level logs LG AVG 0.313 0.321 2026-09-26: 0.3162026-09-27: 0.3212026-09-28: 0.3212026-09-29: 0.321 2026-09-26 2026-09-29 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.

5Pitches 2026Season 40%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: 51%51%Whiff: 17%17%Called strike: 15%15%First pitch strike: 38%38%Hard hit allowed: 36%36% 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 4-Seam Fastball: 39.7%Sweeper: 37.4%Slider: 15.3%Curveball: 5.0%Changeup: 2.6% FF40% · 95 mphprimary pitch FF 40%ST 37%SL 15%CU 5%CH 3% 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″ 4-Seam Fastball: 40% usage, 1″ horizontal break, 15″ drop, 94.8 mphFF95 mphSweeper: 37% usage, 4″ horizontal break, 39″ drop, 83.3 mphST83 mphSlider: 15% usage, 0″ horizontal break, 31″ drop, 88.7 mphSL89 mphCurveball: 5% usage, 8″ horizontal break, 54″ drop, 81.8 mphCU82 mphChangeup: 3% usage, 9″ horizontal break, 32″ drop, 88.7 mphCH89 mph less drop ↑ more drop ↓ · horizontal break ↔ · dot size = usage · break incl. gravity MITHRANDIR · CHARTS
PitchUsagePitchesStuff+Status
SL 52.1% 99 110 limited sample
FB 40.0% 76 103 limited sample
CH 4.7% 9 91 limited sample
CB 3.2% 6 101 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

ERA Δ+1.12
K% Δ-0.079
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