Mithrandir Metrics
Player Round Rock Express Refreshed Jun 15 06:00 AM ET
Player profile / Round Rock Express

Luis Curvelo

P · Bats/Throws R/R · 6' 1", 170 lb · Age 25

Cards
0
Modules
0
Live Δ
--
Club Round Rock Express Position P Roster Reassigned to Minors Status Out / inactive
Traditional line

Season by season

3D Pitch Lab Projections
WLERAGGSSVIPSOWHIP
2025115.68170019.0201.42
2026007.568008.141.92
2 Seasons116.26250027.1241.57
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.

2026-06-15
91
Pitching
percentile
Arsenal3 metrics
91
Rolling projection

Preseason / current pace / Bayesian update

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

2026-06-15
ERA preseason3.91
ERA current pace7.56
ERA rolling p504.59
Observed weight19%
ERA
2.52 3.50 4.59 5.68 6.66
FIP
3.37 4.07 4.84 5.61 6.30
K%
15.8% 18.7% 21.9% 25.1% 27.9%
BB%
5.0% 6.7% 8.5% 10.3% 11.9%
Live percentile strip

Current traits vs projection tick

100th = best in MLB.

2026-06-15
Mithrandir+

Stuff+ and arsenal context

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

2026-06-15
Mithrandir Stuff+110
97
Sinker Stuff+106
81
Slider Stuff+109
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 32%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 Curvelo, Luis · Aggregate zone metrics; not pitch-by-pitch locations Edge: 35%35%Zone: 58%58%Whiff: 24%24%Called strike: 16%16%First pitch strike: 56%56%Hard hit allowed: 45%45% 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 Curvelo, Luis · 2026 arsenal snapshot Slider: 31.9%Sinker: 30.2%Split-Finger: 21.4%4-Seam Fastball: 16.5% SL32% · 83 mphprimary pitch SL 32%SI 30%FS 21%FF 16% MITHRANDIR · CHARTS
Mithrandir Metrics PITCH MOVEMENT Parameterized Mithrandir chart rendered as SVG for templates and exports. Pitch Arsenal Curvelo, Luis · 2026 arsenal snapshot 12″24″36″48″ Slider: 32% usage, 1″ horizontal break, 37″ drop, 83.1 mphSL83 mphSinker: 30% usage, 11″ horizontal break, 17″ drop, 94.5 mphSI95 mphSplit-Finger: 21% usage, 5″ horizontal break, 35″ drop, 83.0 mphFS83 mph4-Seam Fastball: 16% usage, 13″ horizontal break, 17″ drop, 95.3 mphFF95 mph less drop ↑ more drop ↓ · horizontal break ↔ · dot size = usage · break incl. gravity MITHRANDIR · CHARTS
PitchUsagePitchesStuff+Status
SL 42.4% 25 109 limited sample
SI 42.4% 25 106 limited sample
FB 15.3% 9 111 limited sample
Method note

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

Reference layer

Current snapshot

Age25
Height6' 1"
Weight170 lb
Debut2025-07-31
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 202623.9% K | 3.74 ERAProjection
2026-04-14 @ ATH0 ER / 0 K0.0 IP
2026-04-13 @ ATH1 ER / 1 K2.0 IP
2026-04-08 vs SEA0 ER / 2 K2.0 IP