Mithrandir Metrics
Player San Diego Padres Refreshed Jun 2 06:00 AM ET
Player profile / San Diego Padres

Ron Marinaccio

P profile with live context, projection links, and Mithrandir card history when available.

Cards
0
Modules
0
Live Δ
yes
Club San Diego Padres Position P Roster Active Status Healthy / active roster
Rolling projection

Preseason / current pace / Bayesian update

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

2026-06-02
ERA preseason3.46
ERA current pace4.07
ERA rolling p503.68
Observed weight35%
ERA
2.10 2.85 3.68 4.51 5.26
FIP
2.89 3.37 3.90 4.44 4.92
K%
19.0% 21.2% 23.5% 25.9% 28.1%
BB%
5.8% 7.2% 8.8% 10.3% 11.7%
Live percentile strip

Current traits vs projection tick

100th = best in MLB.

2026-06-02
Pitching · percentile strip
BB%6.9%
76 +43 vs proj
Barrel allowed8.4%
41
Fastball velo93.7
39
Hard-hit allowed36.8%
65
K%20.6%
36 -40 vs proj
Whiff%25.4%
67
xwOBA allowed0.316
47 -23 vs proj
Mithrandir+

Stuff+ and arsenal context

Stuff+ appears when the current pitch-event scoring artifact includes this pitcher; missing coverage is shown explicitly.

2026-06-02
Mithrandir Stuff+99
25
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 Marinaccio, Ron · Live snapshot series; true 50/100 PA windows require PA-level logs LG AVG 0.313 2026-05-19: 0.3112026-05-21: 0.3092026-05-23: 0.3222026-05-24: 0.3222026-05-25: 0.3142026-05-26: 0.3142026-05-28: 0.3172026-05-29: 0.3162026-05-30: 0.3162026-05-31: 0.3162026-06-01: 0.3162026-06-02: 0.316 2026-05-19 2026-06-02 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.

4Pitches 2026Season 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 Marinaccio, Ron · Aggregate zone metrics; not pitch-by-pitch locations Edge: 38%38%Zone: 46%46%Whiff: 25%25%Called strike: 13%13%First pitch strike: 49%49%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.

2026
Mithrandir Metrics PITCH ARSENAL DONUT Parameterized Mithrandir chart rendered as SVG for templates and exports. Pitch Arsenal Marinaccio, Ron · 2026 arsenal snapshot 4-Seam Fastball: 44.6%Changeup: 30.1%Cutter: 20.0%Sweeper: 5.3% MIX FF 45%CH 30%FC 20%ST 5% MITHRANDIR · CHARTS
Mithrandir Metrics PITCH MOVEMENT Parameterized Mithrandir chart rendered as SVG for templates and exports. Pitch Arsenal Marinaccio, Ron · 2026 arsenal snapshot FF: HB -0.1, IVB 1.5FFCH: HB -0.7, IVB 3.4CHFC: HB -0.1, IVB 2.6FCST: HB -0.4, IVB 2.9ST horizontal break IVB MITHRANDIR · CHARTS
PitchUsagePitchesStuff+Status
FB 44.9% 238 101 qualified
CH 29.6% 157 94 limited sample
FC 20.0% 106 104 limited sample
SL 5.5% 29 107 limited sample
Method note

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

Reference layer

Current snapshot

Age30
Height6' 2"
Weight205 lb
Debut2022-04-09
Live layer

Delta / regression

ERA Δ+0.65
K% Δ-0.055

positive regression

Mithrandir coverage

Module shelf

ModuleCardsLatestSignal
No Mithrandir card history is available for this player yet.
Projection links / recent games

Available detail

Pitcher Projections 202626.2% K | 3.42 ERAProjection
2026-05-20 vs LAD1 ER / 1 K1.2 IP
2026-04-15 vs SEA2 ER / 2 K2.0 IP
2026-04-11 vs COL1 ER / 2 K1.2 IP
2026-04-07 @ PIT0 ER / 0 K0.2 IP
2026-04-06 @ PIT0 ER / 1 K2.0 IP