Mithrandir Metrics
Player Los Angeles Angels Refreshed Sep 29 06:00 AM ET
Player profile / Los Angeles Angels

Reid Detmers

P · Bats/Throws L/L · 6' 2", 210 lb · Age 27

Cards
30
Modules
1
Live Δ
yes
Club Los Angeles Angels Position P Roster Current MLB team Status Healthy / active roster
Traditional line

Season by season

3D Pitch Lab Projections
WLERAGGSSVIPSOWHIP
2024496.701717087.11091.56
2025533.96610363.2801.30
2026783.3632320185.02111.04
6 Seasons28394.361681073634.17091.27
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.

2026-09-29
83
Pitching
percentile
Pitching9 metrics
70
Arsenal6 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.

2026-09-29
ERA preseason4.58
ERA current pace3.36
ERA rolling p503.65
Observed weight76%
ERA
1.58 2.56 3.65 4.75 5.73
FIP
2.31 2.76 3.26 3.76 4.21
K%
26.0% 27.1% 28.3% 29.6% 30.7%
BB%
6.2% 6.7% 7.4% 8.0% 8.6%
Live percentile strip

Current traits vs projection tick

100th = best in MLB.

2026-09-29
Pitching · percentile strip
WHIP1.05
89
ERA3.36
73
BB%6.8%
82 +32 vs proj
K%28.4%
87
xwOBA allowed0.281
84 +25 vs proj
Barrel allowed7.9%
42
Fastball velo94.0
44
Hard-hit allowed37.9%
54
Whiff%25.7%
73
Mithrandir+

Stuff+ and arsenal context

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

2026-09-29
Fastball Stuff+103
61
Mithrandir Stuff+104
71
Slider Stuff+106
83
Changeup Stuff+103
60
Curveball Stuff+105
92
Sinker Stuff+85
1
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 Detmers, Reid · Live snapshot series; true 50/100 PA windows require PA-level logs LG AVG 0.313 0.281 2026-09-18: 0.2792026-09-19: 0.2792026-09-20: 0.2792026-09-21: 0.2792026-09-22: 0.2792026-09-23: 0.2792026-09-24: 0.2792026-09-25: 0.2792026-09-26: 0.2812026-09-27: 0.2812026-09-28: 0.2812026-09-29: 0.281 2026-09-18 2026-09-29 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.

6Pitches 2026Season 46%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 Detmers, Reid · Aggregate zone metrics; not pitch-by-pitch locations Edge: 38%38%Zone: 50%50%Whiff: 26%26%Called strike: 17%17%First pitch strike: 53%53%Hard hit allowed: 38%38% 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 Detmers, Reid · 2026 arsenal snapshot 4-Seam Fastball: 45.8%Slider: 32.8%Curveball: 11.0%Changeup: 9.3%Sinker: 1.0%Pitch Out: 0.0% FF46% · 94 mphprimary pitch FF 46%SL 33%CU 11%CH 9%SI 1%PO 0% MITHRANDIR · CHARTS
Mithrandir Metrics PITCH MOVEMENT Parameterized Mithrandir chart rendered as SVG for templates and exports. Pitch Arsenal Detmers, Reid · 2026 arsenal snapshot 18″36″54″72″ 4-Seam Fastball: 46% usage, 4″ horizontal break, 14″ drop, 94.1 mphFF94 mphSlider: 33% usage, 1″ horizontal break, 41″ drop, 86.0 mphSL86 mphCurveball: 11% usage, 7″ horizontal break, 68″ drop, 72.3 mphCU72 mphChangeup: 9% usage, 11″ horizontal break, 28″ drop, 83.8 mphCH84 mphSinker: 1% usage, 5″ horizontal break, 18″ drop, 93.5 mphSI94 mphPitch Out: 0% usage, 13″ horizontal break, 22″ drop, 87.3 mphPO87 mph less drop ↑ more drop ↓ · horizontal break ↔ · dot size = usage · break incl. gravity MITHRANDIR · CHARTS
PitchUsagePitchesStuff+Status
FB 44.6% 759 103 qualified
SL 32.3% 549 106 qualified
CH 11.2% 190 103 limited sample
CB 10.2% 173 105 limited sample
SI 1.7% 29 85 limited sample
Method note

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

Reference layer

Current snapshot

Age27
Height6' 2"
Weight210 lb
Debut2021-08-01
Live layer

Delta / regression

ERA Δ-1.00
K% Δ+0.003

positive regression

Regression watch

Unlucky so far. Better days ahead.

0.1σ gap
wOBA-against (actual)0.283
xwOBA-against (deserved)0.281

Detmers’s wOBA-against sits at 0.283, but the quality of contact underneath says it should be 0.281 — a gap of 0.002, 0.1 standard deviations from the MLB norm over 187 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
Pitching302026-09-25Four-Seam Fastball played up through FF/SL tunnel quality
Projection links / recent games

Available detail

Pitcher Projections 202628.1% K | 4.36 ERAProjection
2026-08-15 vs KC0 ER / 11 K8.0 IP
2026-04-20 vs TOR4 ER / 5 K6.0 IP
2026-04-14 @ NYY1 ER / 9 K7.0 IP
2026-04-08 vs ATL5 ER / 4 K4.1 IP
2026-04-03 vs SEA0 ER / 4 K6.2 IP