Mithrandir Metrics
Player Omaha Storm Chasers Refreshed Jun 14 06:00 AM ET
Player profile / Omaha Storm Chasers

Mitch Spence

P · Bats/Throws R/R · 6' 1", 185 lb · Age 28

Cards
2
Modules
1
Live Δ
--
Club Omaha Storm Chasers Position P Roster Reassigned to Minors Status Out / inactive
Traditional line

Season by season

3D Pitch Lab Projections
WLERAGGSSVIPSOWHIP
20248104.5835240151.11261.38
2025365.10328184.2661.44
20260013.501004.032.25
3 Seasons11164.9168321240.01951.42
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.

2026-06-14
38
Pitching
percentile
Arsenal5 metrics
38
Rolling projection

Preseason / current pace / Bayesian update

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

2026-06-14
ERA preseason4.62
ERA current pace13.50
ERA rolling p505.34
Observed weight8%
ERA
3.53 4.39 5.34 6.29 7.14
FIP
4.00 4.46 4.98 5.49 5.95
K%
13.7% 16.2% 18.9% 21.7% 24.1%
BB%
5.9% 7.0% 8.2% 9.5% 10.6%
Live percentile strip

Current traits vs projection tick

100th = best in MLB.

2026-06-14
Mithrandir+

Stuff+ and arsenal context

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

2026-06-14
Curveball Stuff+107
99
Cutter Stuff+83
0
Mithrandir Stuff+92
9
Sinker Stuff+98
21
Slider Stuff+104
62
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.

6Pitches 2025Season 45%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 Spence, Mitch · Aggregate zone metrics; not pitch-by-pitch locations Edge: 36%36%Zone: 44%44%Whiff: 16%16%Called strike: 18%18%First pitch strike: 48%48%Hard hit allowed: 38%38% Dashed border = aggregate mixed-batter zone proxy MITHRANDIR · CHARTS
Pitch arsenal

Usage mix, movement map, and Stuff+ composition

2025 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 →

2025
Mithrandir Metrics PITCH ARSENAL DONUT Parameterized Mithrandir chart rendered as SVG for templates and exports. Pitch Arsenal Spence, Mitch · 2025 arsenal snapshot Cutter: 45.3%Slider: 26.4%Curveball: 17.5%Sinker: 9.5%Changeup: 1.2%Pitch Out: 0.1% FC45% · 91 mphprimary pitch FC 45%SL 26%CU 18%SI 10%CH 1%PO 0% MITHRANDIR · CHARTS
Mithrandir Metrics PITCH MOVEMENT Parameterized Mithrandir chart rendered as SVG for templates and exports. Pitch Arsenal Spence, Mitch · 2025 arsenal snapshot 15″30″45″60″ Cutter: 45% usage, 0″ horizontal break, 28″ drop, 91.1 mphFC91 mphSlider: 26% usage, 6″ horizontal break, 36″ drop, 84.6 mphSL85 mphCurveball: 18% usage, 3″ horizontal break, 52″ drop, 81.8 mphCU82 mphSinker: 10% usage, 3″ horizontal break, 27″ drop, 92.6 mphSI93 mphChangeup: 1% usage, 6″ horizontal break, 32″ drop, 88.1 mphCH88 mphPitch Out: 0% usage, 2″ horizontal break, 30″ drop, 85.4 mphPO85 mph less drop ↑ more drop ↓ · horizontal break ↔ · dot size = usage · break incl. gravity MITHRANDIR · CHARTS
PitchUsagePitchesStuff+Status
FC 35.7% 30 83 limited sample
SI 21.4% 18 98 limited sample
SL 19.0% 16 104 limited sample
CB 13.1% 11 107 limited sample
CH 10.7% 9 95 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"
Weight185 lb
Debut2024-03-29
Live layer

Delta / regression

No Live State delta is available for this profile yet.

Mithrandir coverage

Module shelf

ModuleCardsLatestSignal
Pitching22026-03-11Stuff and strike quality carried the outing
Projection links / recent games

Available detail

Pitcher Projections 202619.3% K | 4.89 ERAProjection
2026-03-11 @ CHC5 ER / 0 K2.0 IP