Mithrandir Metrics
Player Colorado Rockies Refreshed Sep 1 06:00 AM ET
Player profile / Colorado Rockies

Jimmy Herget

P · Bats/Throws R/R · 6' 3", 183 lb · Age 32

Cards
5
Modules
1
Live Δ
yes
Club Colorado Rockies Position P Roster Current MLB team Status Healthy / active roster
Traditional line

Season by season

3D Pitch Lab Projections
WLERAGGSSVIPSOWHIP
2024014.3880012.1151.30
2025122.48590083.1811.18
2026055.95433342.1381.58
8 Seasons8163.59231612280.22601.24
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.

2026-09-01
21
Pitching
percentile
Pitching9 metrics
27
Arsenal5 metrics
31
Rolling projection

Preseason / current pace / Bayesian update

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

2026-09-01
ERA preseason3.71
ERA current pace5.82
ERA rolling p504.69
Observed weight46%
ERA
3.26 3.94 4.69 5.44 6.11
FIP
3.27 3.84 4.47 5.11 5.68
K%
17.3% 19.1% 21.0% 23.0% 24.7%
BB%
6.9% 8.1% 9.4% 10.7% 11.8%
Live percentile strip

Current traits vs projection tick

100th = best in MLB.

2026-09-01
Pitching · percentile strip
WHIP1.66
8
ERA5.82
14
BB%11.7%
20 -48 vs proj
K%18.4%
23 -38 vs proj
xwOBA allowed0.323
38 -27 vs proj
Barrel allowed10.0%
16 -21 vs proj
Fastball velo91.1
6
Hard-hit allowed37.9%
54
Whiff%24.2%
60
Mithrandir+

Stuff+ and arsenal context

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

2026-09-01
Mithrandir Stuff+101
40
Slider Stuff+106
81
Changeup Stuff+86
1
Fastball Stuff+84
1
Sinker Stuff+99
30
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 Herget, Jimmy · Live snapshot series; true 50/100 PA windows require PA-level logs LG AVG 0.313 0.323 2026-08-21: 0.3232026-08-22: 0.3232026-08-23: 0.3232026-08-24: 0.3232026-08-25: 0.3282026-08-26: 0.3282026-08-27: 0.3272026-08-28: 0.3262026-08-29: 0.3262026-08-30: 0.3232026-08-31: 0.3232026-09-01: 0.323 2026-08-21 2026-09-01 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.

5Pitches 2026Season 31%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 Herget, Jimmy · Aggregate zone metrics; not pitch-by-pitch locations Edge: 35%35%Zone: 46%46%Whiff: 24%24%Called strike: 16%16%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 Herget, Jimmy · 2026 arsenal snapshot Slider: 30.6%Sweeper: 28.9%Sinker: 23.7%4-Seam Fastball: 8.9%Changeup: 7.9% SL31% · 86 mphprimary pitch SL 31%ST 29%SI 24%FF 9%CH 8% MITHRANDIR · CHARTS
Mithrandir Metrics PITCH MOVEMENT Parameterized Mithrandir chart rendered as SVG for templates and exports. Pitch Arsenal Herget, Jimmy · 2026 arsenal snapshot 12″24″36″48″ Slider: 31% usage, 0″ horizontal break, 29″ drop, 85.9 mphSL86 mphSweeper: 29% usage, 3″ horizontal break, 42″ drop, 78.1 mphST78 mphSinker: 24% usage, 5″ horizontal break, 33″ drop, 90.7 mphSI91 mph4-Seam Fastball: 9% usage, 5″ horizontal break, 23″ drop, 92.0 mphFF92 mphChangeup: 8% usage, 9″ horizontal break, 37″ drop, 85.2 mphCH85 mph less drop ↑ more drop ↓ · horizontal break ↔ · dot size = usage · break incl. gravity MITHRANDIR · CHARTS
PitchUsagePitchesStuff+Status
SL 60.2% 302 106 qualified
SI 22.1% 111 99 limited sample
FB 9.8% 49 84 limited sample
CH 8.0% 40 86 limited sample
Method note

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

Reference layer

Current snapshot

Age32
Height6' 3"
Weight183 lb
Debut2019-07-07
Live layer

Delta / regression

ERA Δ+1.69
K% Δ-0.053

positive regression

Regression watch

Unlucky so far. Better days ahead.

2.9σ gap
wOBA-against (actual)0.416
xwOBA-against (deserved)0.323

Herget’s wOBA-against sits at 0.416, but the quality of contact underneath says it should be 0.323 — a gap of 0.093, 2.9 standard deviations from the MLB norm over 45 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
Pitching52026-04-21Command and chase profile drove the outing
Projection links / recent games

Available detail

Pitcher Projections 202623.7% K | 4.13 ERAProjection
2026-04-12 @ SD1 ER / 0 K1.0 IP
2026-04-11 @ SD0 ER / 0 K1.0 IP
2026-04-09 @ SD0 ER / 0 K1.0 IP
2026-04-06 vs HOU1 ER / 1 K1.2 IP
2026-04-04 vs PHI0 ER / 2 K1.1 IP