Mithrandir Metrics
Player Chicago Cubs Refreshed Jun 12 06:00 AM ET
Player profile / Chicago Cubs

Riley Martin

P · Bats/Throws L/L · 6' 1", 215 lb · Age 28

Cards
2
Modules
1
Live Δ
--
Club Chicago Cubs Position P Roster Injured 15-Day Status IL-15
Traditional line

Season by season

3D Pitch Lab Projections
WLERAGGSSVIPSOWHIP
2026002.168108.1100.84
1 Seasons002.168108.1100.84
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.

2026-06-12
78
Pitching
percentile
Arsenal4 metrics
78
Rolling projection

Preseason / current pace / Bayesian update

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

2026-06-12
ERA preseason3.12
ERA current pace2.16
ERA rolling p503.01
Observed weight12%
ERA
0.90 1.90 3.01 4.12 5.12
FIP
1.08 2.36 3.77 5.19 6.46
K%
12.6% 17.3% 22.6% 27.9% 32.7%
BB%
3.6% 5.7% 8.1% 10.4% 12.6%
Live percentile strip

Current traits vs projection tick

100th = best in MLB.

2026-06-12
Mithrandir+

Stuff+ and arsenal context

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

2026-06-12
Curveball Stuff+100
26
Fastball Stuff+111
95
Mithrandir Stuff+108
93
Slider Stuff+112
98
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.

3Pitches 2026Season 55%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 Martin, Riley · Aggregate zone metrics; not pitch-by-pitch locations Edge: 33%33%Zone: 63%63%Whiff: 19%19%Called strike: 19%19%First pitch strike: 71%71%Hard hit allowed: 42%42% 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 Martin, Riley · 2026 arsenal snapshot 4-Seam Fastball: 55.1%Curveball: 29.7%Slider: 15.3% FF55% · 95 mphprimary pitch FF 55%CU 30%SL 15% MITHRANDIR · CHARTS
Mithrandir Metrics PITCH MOVEMENT Parameterized Mithrandir chart rendered as SVG for templates and exports. Pitch Arsenal Martin, Riley · 2026 arsenal snapshot 15″30″45″60″ 4-Seam Fastball: 55% usage, 2″ horizontal break, 13″ drop, 94.5 mphFF95 mphCurveball: 30% usage, 1″ horizontal break, 49″ drop, 85.5 mphCU85 mphSlider: 15% usage, 2″ horizontal break, 30″ drop, 89.4 mphSL89 mph less drop ↑ more drop ↓ · horizontal break ↔ · dot size = usage · break incl. gravity MITHRANDIR · CHARTS
PitchUsagePitchesStuff+Status
FB 55.1% 65 111 limited sample
CB 29.7% 35 100 limited sample
SL 15.3% 18 112 limited sample
Method note

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

Reference layer

Current snapshot

Age28
Height6' 1"
Weight215 lb
Debut2026-04-06
Live layer

Delta / regression

No Live State delta is available for this profile yet.

Mithrandir coverage

Module shelf

ModuleCardsLatestSignal
Pitching22026-04-14Contact quality stayed muted throughout the start
Projection links / recent games

Available detail

Pitcher Projections 202620.9% K | 3.87 ERAProjection
2026-04-17 vs NYM0 ER / 1 K1.0 IP
2026-04-14 @ PHI0 ER / 1 K1.0 IP
2026-04-12 vs PIT0 ER / 2 K1.1 IP
2026-04-06 @ TB0 ER / 0 K1.0 IP