Mithrandir Metrics
Player Durham Bulls Refreshed Jul 18 06:00 AM ET
Player profile / Durham Bulls

Joe Boyle

P · Bats/Throws R/R · 6' 8", 250 lb · Age 26

Cards
5
Modules
1
Live Δ
--
Club Durham Bulls Position P Roster Reassigned to Minors Status Healthy / active roster
Traditional line

Season by season

3D Pitch Lab Projections
WLERAGGSSVIPSOWHIP
2024366.421310047.2561.72
2025144.67139052.0581.37
2026015.1733015.2161.09
4 Seasons6115.0032250131.11451.39
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.

2026-07-18
61
Pitching
percentile
Arsenal4 metrics
61
Rolling projection

Preseason / current pace / Bayesian update

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

2026-07-18
ERA preseason3.92
ERA current pace5.17
ERA rolling p504.24
Observed weight25%
ERA
2.88 3.52 4.24 4.96 5.60
FIP
2.78 3.17 3.59 4.01 4.40
K%
20.3% 22.7% 25.3% 28.0% 30.4%
BB%
8.7% 9.9% 11.3% 12.7% 13.9%
Live percentile strip

Current traits vs projection tick

100th = best in MLB.

2026-07-18
Mithrandir+

Stuff+ and arsenal context

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

2026-07-18
Fastball Stuff+105
73
Mithrandir Stuff+104
70
Sinker Stuff+98
19
Slider Stuff+106
83
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.

5Pitches 2026Season 35%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 Boyle, Joe · Aggregate zone metrics; not pitch-by-pitch locations Edge: 36%36%Zone: 49%49%Whiff: 25%25%Called strike: 17%17%First pitch strike: 49%49%Hard hit allowed: 44%44% 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 Boyle, Joe · 2026 arsenal snapshot Slider: 35.0%4-Seam Fastball: 23.7%Sinker: 16.0%Split-Finger: 14.5%Sweeper: 10.7% SL35% · 89 mphprimary pitch SL 35%FF 24%SI 16%FS 15%ST 11% MITHRANDIR · CHARTS
Mithrandir Metrics PITCH MOVEMENT Parameterized Mithrandir chart rendered as SVG for templates and exports. Pitch Arsenal Boyle, Joe · 2026 arsenal snapshot 12″24″36″48″ Slider: 35% usage, 1″ horizontal break, 33″ drop, 89.0 mphSL89 mph4-Seam Fastball: 24% usage, 4″ horizontal break, 15″ drop, 97.0 mphFF97 mphSinker: 16% usage, 12″ horizontal break, 24″ drop, 97.1 mphSI97 mphSplit-Finger: 15% usage, 11″ horizontal break, 31″ drop, 92.6 mphFS93 mphSweeper: 11% usage, 2″ horizontal break, 37″ drop, 85.1 mphST85 mph less drop ↑ more drop ↓ · horizontal break ↔ · dot size = usage · break incl. gravity MITHRANDIR · CHARTS
PitchUsagePitchesStuff+Status
SL 52.8% 114 106 limited sample
FB 24.5% 53 105 limited sample
SI 22.7% 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

Age26
Height6' 8"
Weight250 lb
Debut2023-09-17
Live layer

Delta / regression

No Live State delta is available for this profile yet.

Mithrandir coverage

Module shelf

ModuleCardsLatestSignal
Pitching52026-04-08Slider played up through SL/SI tunnel quality
Projection links / recent games

Available detail

Pitcher Projections 202624.8% K | 3.75 ERAProjection
2026-04-08 vs CHC5 ER / 3 K4.1 IP
2026-04-03 @ MIN2 ER / 9 K5.1 IP