Mithrandir Metrics
Player St. Louis Cardinals Refreshed Sep 1 06:00 AM ET
Player profile / St. Louis Cardinals

Luis Gastelum

P · Bats/Throws R/R · 6' 2", 175 lb · Age 24

Cards
0
Modules
0
Live Δ
yes
Club St. Louis Cardinals Position P Roster Current MLB team Status Healthy / active roster
Traditional line

Season by season

3D Pitch Lab Projections
WLERAGGSSVIPSOWHIP
2026435.04220025.0321.16
1 Seasons435.04220025.0321.16
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.

2026-09-01
64
Pitching
percentile
Pitching9 metrics
64
Arsenal5 metrics
56
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.

2026-09-01
Pitching · percentile strip
WHIP1.11
83
ERA5.40
18
BB%8.3%
58
K%33.0%
98
xwOBA allowed0.304
62
Barrel allowed9.5%
21
Fastball velo93.9
41
Hard-hit allowed28.6%
98
Whiff%34.1%
99
Mithrandir+

Stuff+ and arsenal context

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

2026-09-01
Changeup Stuff+106
84
Fastball Stuff+106
76
Mithrandir Stuff+103
59
Sinker Stuff+101
39
Slider Stuff+98
21
Rolling form chart

xwOBA allowed snapshot line

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

12 snapshots
Mithrandir Metrics ROLLING XWOBA LINE Parameterized Mithrandir chart rendered as SVG for templates and exports. season=2026 Rolling xwOBA allowed Gastelum, Luis · Live snapshot series; true 50/100 PA windows require PA-level logs LG AVG 0.313 0.304 2026-08-21: 0.3122026-08-22: 0.3122026-08-23: 0.3122026-08-24: 0.3122026-08-25: 0.3162026-08-26: 0.3162026-08-27: 0.3062026-08-28: 0.2952026-08-29: 0.2952026-08-30: 0.2952026-08-31: 0.3042026-09-01: 0.304 2026-08-21 2026-09-01 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.

4Pitches 2026Season 37%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 Gastelum, Luis · Aggregate zone metrics; not pitch-by-pitch locations Edge: 38%38%Zone: 45%45%Whiff: 34%34%Called strike: 16%16%First pitch strike: 57%57%Hard hit allowed: 29%29% 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 Gastelum, Luis · 2026 arsenal snapshot Changeup: 37.3%4-Seam Fastball: 31.6%Sweeper: 21.2%Sinker: 9.9% CH37% · 82 mphprimary pitch CH 37%FF 32%ST 21%SI 10% MITHRANDIR · CHARTS
Mithrandir Metrics PITCH MOVEMENT Parameterized Mithrandir chart rendered as SVG for templates and exports. Pitch Arsenal Gastelum, Luis · 2026 arsenal snapshot 12″24″36″48″ Changeup: 37% usage, 4″ horizontal break, 45″ drop, 81.8 mphCH82 mph4-Seam Fastball: 32% usage, 1″ horizontal break, 16″ drop, 94.1 mphFF94 mphSweeper: 21% usage, 4″ horizontal break, 39″ drop, 84.6 mphST85 mphSinker: 10% usage, 14″ horizontal break, 24″ drop, 93.4 mphSI93 mph less drop ↑ more drop ↓ · horizontal break ↔ · dot size = usage · break incl. gravity MITHRANDIR · CHARTS
PitchUsagePitchesStuff+Status
CH 36.5% 65 106 limited sample
FB 29.8% 53 106 limited sample
SL 24.2% 43 98 limited sample
SI 9.6% 17 101 limited sample
Method note

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

Reference layer

Current snapshot

Age24
Height6' 2"
Weight175 lb
Debut2026-07-08
Live layer

Delta / regression

ERA Δ--
K% Δ--
Mithrandir coverage

Module shelf

ModuleCardsLatestSignal
No Mithrandir card history is available for this player yet.
Projection links / recent games

Available detail

Pitcher Projections 202622.1% K | 4.56 ERAProjection
2026-03-22 @ HOU0 ER / 3 K1.0 IP
2026-03-20 @ NYM0 ER / 1 K1.0 IP