Mithrandir Metrics
Player Tampa Bay Rays Refreshed Sep 2 06:00 AM ET
Player profile / Tampa Bay Rays

Casey Legumina

P · Bats/Throws R/R · 6' 2", 195 lb · Age 29

Cards
5
Modules
1
Live Δ
yes
Club Tampa Bay Rays Position P Roster Current MLB team Status Healthy / active roster
Traditional line

Season by season

3D Pitch Lab Projections
WLERAGGSSVIPSOWHIP
2024008.686009.171.82
2025465.62481049.2551.45
2026223.73476060.1461.24
4 Seasons784.9811270132.01191.43
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.

2026-09-02
55
Pitching
percentile
Pitching9 metrics
49
Arsenal5 metrics
71
Rolling projection

Preseason / current pace / Bayesian update

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

2026-09-02
ERA preseason4.58
ERA current pace3.99
ERA rolling p504.27
Observed weight53%
ERA
2.59 3.38 4.27 5.16 5.96
FIP
2.93 3.38 3.88 4.38 4.83
K%
16.8% 18.4% 20.1% 21.8% 23.3%
BB%
5.1% 6.1% 7.1% 8.2% 9.2%
Live percentile strip

Current traits vs projection tick

100th = best in MLB.

2026-09-02
Pitching · percentile strip
WHIP1.24
67
ERA3.99
52
BB%5.6%
92 +45 vs proj
K%17.6%
17 -39 vs proj
xwOBA allowed0.313
48 +21 vs proj
Barrel allowed6.6%
63 +19 vs proj
Fastball velo93.1
27
Hard-hit allowed36.5%
63
Whiff%18.5%
16 -29 vs proj
Mithrandir+

Stuff+ and arsenal context

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

2026-09-02
Fastball Stuff+106
75
Changeup Stuff+98
23
Mithrandir Stuff+106
88
Sinker Stuff+106
86
Slider Stuff+106
86
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 Legumina, Casey · Live snapshot series; true 50/100 PA windows require PA-level logs LG AVG 0.313 0.313 2026-08-22: 0.3232026-08-23: 0.3232026-08-24: 0.3232026-08-25: 0.3232026-08-26: 0.3232026-08-27: 0.3222026-08-28: 0.3222026-08-29: 0.3222026-08-30: 0.3222026-08-31: 0.3192026-09-01: 0.3172026-09-02: 0.313 2026-08-22 2026-09-02 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 43%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 Legumina, Casey · Aggregate zone metrics; not pitch-by-pitch locations Edge: 37%37%Zone: 51%51%Whiff: 18%18%Called strike: 15%15%First pitch strike: 57%57%Hard hit allowed: 37%37% 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 Legumina, Casey · 2026 arsenal snapshot 4-Seam Fastball: 43.4%Sinker: 21.8%Sweeper: 12.3%Slider: 12.0%Changeup: 10.5% FF43% · 93 mphprimary pitch FF 43%SI 22%ST 12%SL 12%CH 10% MITHRANDIR · CHARTS
Mithrandir Metrics PITCH MOVEMENT Parameterized Mithrandir chart rendered as SVG for templates and exports. Pitch Arsenal Legumina, Casey · 2026 arsenal snapshot 12″24″36″48″ 4-Seam Fastball: 43% usage, 3″ horizontal break, 18″ drop, 93.2 mphFF93 mphSinker: 22% usage, 14″ horizontal break, 23″ drop, 93.0 mphSI93 mphSweeper: 12% usage, 4″ horizontal break, 37″ drop, 79.9 mphST80 mphSlider: 12% usage, 2″ horizontal break, 33″ drop, 85.0 mphSL85 mphChangeup: 10% usage, 15″ horizontal break, 36″ drop, 86.9 mphCH87 mph less drop ↑ more drop ↓ · horizontal break ↔ · dot size = usage · break incl. gravity MITHRANDIR · CHARTS
PitchUsagePitchesStuff+Status
FB 43.7% 208 106 qualified
SL 25.4% 121 106 limited sample
SI 20.6% 98 106 limited sample
CH 10.3% 49 98 limited sample
Method note

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

Reference layer

Current snapshot

Age29
Height6' 2"
Weight195 lb
Debut2023-04-15
Live layer

Delta / regression

ERA Δ-0.74
K% Δ-0.052

positive regression

Regression watch

Unlucky so far. Better days ahead.

1.1σ gap
wOBA-against (actual)0.346
xwOBA-against (deserved)0.313

Legumina’s wOBA-against sits at 0.346, but the quality of contact underneath says it should be 0.313 — a gap of 0.032, 1.1 standard deviations from the MLB norm over 63 IP. The results have been worse than the process deserves; as the sample grows, expect the numbers to climb back toward the underlying level.

Mithrandir coverage

Module shelf

ModuleCardsLatestSignal
Pitching52026-08-25Run prevention outpaced the underlying contact signals
Projection links / recent games

Available detail

Pitcher Projections 202622.9% K | 4.74 ERAProjection
2026-08-15 vs BAL0 ER / 4 K2.0 IP
2026-04-20 vs ATH3 ER / 0 K1.0 IP
2026-04-17 vs TEX2 ER / 2 K2.1 IP
2026-04-14 @ SD1 ER / 1 K1.0 IP
2026-04-11 vs HOU0 ER / 2 K1.2 IP