Mithrandir Metrics
Player Colorado Rockies Refreshed Sep 27 06:00 AM ET
Player profile / Colorado Rockies

Jimmy Herget

P · Bats/Throws R/R · 6' 3", 183 lb · Age 33

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
2026065.70513353.2471.53
8 Seasons8173.64239612292.02691.24
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.

2026-09-27
22
Pitching
percentile
Pitching9 metrics
26
Arsenal5 metrics
30
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 preseason3.72
ERA current pace5.70
ERA rolling p504.74
Observed weight51%
ERA
3.31 3.99 4.74 5.49 6.17
FIP
3.46 4.02 4.65 5.27 5.83
K%
17.3% 19.0% 20.8% 22.6% 24.3%
BB%
7.0% 8.1% 9.3% 10.5% 11.5%
Live percentile strip

Current traits vs projection tick

100th = best in MLB.

2026-09-27
Pitching · percentile strip
WHIP1.60
12
ERA5.70
13
BB%11.0%
25 -43 vs proj
K%18.5%
25 -38 vs proj
xwOBA allowed0.325
35 -31 vs proj
Barrel allowed10.9%
9 -27 vs proj
Fastball velo91.1
8
Hard-hit allowed38.5%
49
Whiff%23.2%
55
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
Mithrandir Stuff+101
36
Slider Stuff+104
72
Changeup Stuff+87
3
Fastball Stuff+86
1
Sinker Stuff+101
39
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 0.325 2026-09-13: 0.3272026-09-14: 0.3262026-09-18: 0.3262026-09-19: 0.3262026-09-20: 0.3262026-09-21: 0.3232026-09-22: 0.3232026-09-23: 0.3232026-09-24: 0.3232026-09-25: 0.3232026-09-26: 0.3252026-09-27: 0.325 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.

5Pitches 2026Season 33%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: 23%23%Called strike: 16%16%First pitch strike: 51%51%Hard hit allowed: 39%39% 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: 32.5%Sweeper: 27.5%Sinker: 23.0%Changeup: 8.5%4-Seam Fastball: 8.5% SL33% · 86 mphprimary pitch SL 33%ST 28%SI 23%CH 8%FF 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: 33% usage, 0″ horizontal break, 30″ drop, 85.9 mphSL86 mphSweeper: 28% usage, 2″ horizontal break, 41″ drop, 78.2 mphST78 mphSinker: 23% usage, 5″ horizontal break, 33″ drop, 90.8 mphSI91 mphChangeup: 8% usage, 9″ horizontal break, 37″ drop, 85.3 mphCH85 mph4-Seam Fastball: 8% usage, 6″ horizontal break, 23″ drop, 92.0 mphFF92 mph less drop ↑ more drop ↓ · horizontal break ↔ · dot size = usage · break incl. gravity MITHRANDIR · CHARTS
PitchUsagePitchesStuff+Status
SL 60.7% 370 104 qualified
SI 21.3% 130 101 limited sample
FB 9.2% 56 86 limited sample
CH 8.9% 54 87 limited sample
Method note

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

Reference layer

Current snapshot

Age33
Height6' 3"
Weight183 lb
Debut2019-07-07
Live layer

Delta / regression

ERA Δ+1.56
K% Δ-0.052

positive regression

Regression watch

Unlucky so far. Better days ahead.

2.5σ gap
wOBA-against (actual)0.401
xwOBA-against (deserved)0.325

Herget’s wOBA-against sits at 0.401, but the quality of contact underneath says it should be 0.325 — a gap of 0.076, 2.5 standard deviations from the MLB norm over 56 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 | 4.14 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