Mithrandir Metrics
Player San Diego Padres Refreshed Sep 27 06:00 AM ET
Player profile / San Diego Padres

Mason Miller

P · Bats/Throws R/R · 6' 5", 200 lb · Age 28

Cards
0
Modules
0
Live Δ
yes
Club San Diego Padres Position P Roster Current MLB team Status Healthy / active roster
Traditional line

Season by season

3D Pitch Lab Projections
WLERAGGSSVIPSOWHIP
2024222.495502865.01040.88
2025122.636002261.21040.91
2026521.676603870.01290.90
4 Seasons892.47191688230.03750.94
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.

2026-09-27
88
Pitching
percentile
Pitching9 metrics
87
Arsenal4 metrics
62
Rolling projection

Preseason / current pace / Bayesian update

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

2026-09-27
ERA preseason2.88
ERA current pace1.30
ERA rolling p502.03
Observed weight54%
ERA
0.54 1.25 2.03 2.81 3.52
FIP
0.65 1.18 1.77 2.36 2.89
K%
38.8% 40.9% 43.1% 45.4% 47.5%
BB%
7.5% 8.6% 9.9% 11.1% 12.3%
Live percentile strip

Current traits vs projection tick

100th = best in MLB.

2026-09-27
Pitching · percentile strip
WHIP0.92
97
ERA1.30
99
BB%9.4%
45 +21 vs proj
K%46.4%
100
xwOBA allowed0.201
100
Barrel allowed7.6%
47
Fastball velo101.4
100
Hard-hit allowed30.3%
96
Whiff%42.4%
100
Mithrandir+

Stuff+ and arsenal context

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

2026-09-27
Fastball Stuff+107
84
Mithrandir Stuff+106
87
Slider Stuff+105
76
Changeup Stuff+87
3
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 Miller, Mason · Live snapshot series; true 50/100 PA windows require PA-level logs LG AVG 0.313 0.201 2026-09-13: 0.1892026-09-14: 0.1892026-09-18: 0.1882026-09-19: 0.1882026-09-20: 0.1882026-09-21: 0.1902026-09-22: 0.1902026-09-23: 0.1902026-09-24: 0.1932026-09-25: 0.1932026-09-26: 0.1942026-09-27: 0.201 2026-09-13 2026-09-27 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 49%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 Miller, Mason · Aggregate zone metrics; not pitch-by-pitch locations Edge: 34%34%Zone: 45%45%Whiff: 42%42%Called strike: 18%18%First pitch strike: 53%53%Hard hit allowed: 30%30% 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 Miller, Mason · 2026 arsenal snapshot Slider: 49.4%4-Seam Fastball: 48.5%Changeup: 2.0%Sinker: 0.1% SL49% · 88 mphprimary pitch SL 49%FF 49%CH 2%SI 0% MITHRANDIR · CHARTS
Mithrandir Metrics PITCH MOVEMENT Parameterized Mithrandir chart rendered as SVG for templates and exports. Pitch Arsenal Miller, Mason · 2026 arsenal snapshot 12″24″36″48″ Slider: 49% usage, 1″ horizontal break, 40″ drop, 88.0 mphSL88 mph4-Seam Fastball: 49% usage, 1″ horizontal break, 10″ drop, 101.4 mphFF101 mphChangeup: 2% usage, 15″ horizontal break, 26″ drop, 96.5 mphCH96 mphSinker: 0% usage, 4″ horizontal break, 9″ drop, 100.9 mphSI101 mph less drop ↑ more drop ↓ · horizontal break ↔ · dot size = usage · break incl. gravity MITHRANDIR · CHARTS
PitchUsagePitchesStuff+Status
SL 51.1% 341 105 qualified
FB 46.6% 311 107 qualified
CH 2.1% 14 87 limited sample
SI 0.1% 1 124 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' 5"
Weight200 lb
Debut2023-04-19
Live layer

Delta / regression

ERA Δ-1.91
K% Δ+0.083

positive regression

Regression watch

Unlucky so far. Better days ahead.

0.8σ gap
wOBA-against (actual)0.226
xwOBA-against (deserved)0.201

Miller’s wOBA-against sits at 0.226, but the quality of contact underneath says it should be 0.201 — a gap of 0.025, 0.8 standard deviations from the MLB norm over 71 IP. The results have been worse than the process deserves; as the sample grows, expect the numbers to climb back toward the underlying level.

Mithrandir coverage

Module shelf

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

Available detail

Pitcher Projections 202638.1% K | 3.21 ERAProjection
2026-04-14 vs SEA0 ER / 1 K1.0 IP
2026-04-09 vs COL0 ER / 3 K1.0 IP
2026-04-08 @ PIT0 ER / 2 K1.0 IP
2026-04-05 @ BOS0 ER / 3 K1.0 IP
2026-04-04 @ BOS0 ER / 3 K1.0 IP