Mithrandir Metrics
Player Chicago Cubs Refreshed Jun 14 06:00 AM ET
Player profile / Chicago Cubs

Jacob Webb

P · Bats/Throws R/R · 6' 2", 210 lb · Age 32

Cards
0
Modules
0
Live Δ
yes
Club Chicago Cubs Position P Roster Active Status Healthy / active roster
Traditional line

Season by season

3D Pitch Lab Projections
WLERAGGSSVIPSOWHIP
2024253.02600256.2581.18
2025543.00550166.0581.03
2026112.73300129.2351.31
7 Seasons18152.9627708282.22791.21
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.

2026-06-14
61
Pitching
percentile
Pitching9 metrics
50
Arsenal5 metrics
81
Rolling projection

Preseason / current pace / Bayesian update

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

2026-06-14
ERA preseason3.77
ERA current pace2.76
ERA rolling p503.40
Observed weight36%
ERA
2.01 2.67 3.40 4.13 4.79
FIP
3.39 3.79 4.24 4.68 5.08
K%
19.8% 21.8% 23.9% 26.1% 28.1%
BB%
5.8% 7.0% 8.3% 9.7% 10.8%
Live percentile strip

Current traits vs projection tick

100th = best in MLB.

2026-06-14
Pitching · percentile strip
WHIP1.45
27
ERA2.76
77
BB%7.3%
70 +24 vs proj
K%26.3%
78 +27 vs proj
xwOBA allowed0.312
52
Barrel allowed11.1%
13 -41 vs proj
Fastball velo94.0
43
Hard-hit allowed50.0%
3
Whiff%29.9%
89 +30 vs proj
Mithrandir+

Stuff+ and arsenal context

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

2026-06-14
Fastball Stuff+104
65
Changeup Stuff+111
97
Curveball Stuff+105
92
Mithrandir Stuff+107
84
Slider Stuff+104
67
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 Webb, Jacob · Live snapshot series; true 50/100 PA windows require PA-level logs LG AVG 0.314 0.312 2026-06-03: 0.3272026-06-04: 0.3272026-06-05: 0.3262026-06-06: 0.3262026-06-07: 0.3262026-06-08: 0.3112026-06-09: 0.3112026-06-10: 0.3112026-06-11: 0.3112026-06-12: 0.3122026-06-13: 0.3122026-06-14: 0.312 2026-06-03 2026-06-14 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 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 Webb, Jacob · Aggregate zone metrics; not pitch-by-pitch locations Edge: 38%38%Zone: 51%51%Whiff: 30%30%Called strike: 14%14%First pitch strike: 58%58%Hard hit allowed: 50%50% 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 Webb, Jacob · 2026 arsenal snapshot 4-Seam Fastball: 49.1%Changeup: 36.4%Sweeper: 6.0%Curveball: 5.8%Slider: 2.7% FF49% · 94 mphprimary pitch FF 49%CH 36%ST 6%CU 6%SL 3% MITHRANDIR · CHARTS
Mithrandir Metrics PITCH MOVEMENT Parameterized Mithrandir chart rendered as SVG for templates and exports. Pitch Arsenal Webb, Jacob · 2026 arsenal snapshot 15″30″45″60″ 4-Seam Fastball: 49% usage, 2″ horizontal break, 15″ drop, 94.0 mphFF94 mphChangeup: 36% usage, 9″ horizontal break, 29″ drop, 85.6 mphCH86 mphSweeper: 6% usage, 6″ horizontal break, 41″ drop, 82.6 mphST83 mphCurveball: 6% usage, 1″ horizontal break, 53″ drop, 81.7 mphCU82 mphSlider: 3% usage, 1″ horizontal break, 37″ drop, 86.7 mphSL87 mph less drop ↑ more drop ↓ · horizontal break ↔ · dot size = usage · break incl. gravity MITHRANDIR · CHARTS
PitchUsagePitchesStuff+Status
FB 50.3% 220 104 qualified
CH 36.6% 160 111 limited sample
SL 7.3% 32 104 limited sample
CB 5.7% 25 105 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' 2"
Weight210 lb
Debut2019-04-16
Live layer

Delta / regression

ERA Δ-0.83
K% Δ+0.036

positive regression

Regression watch

Unlucky so far. Better days ahead.

2.3σ gap
wOBA-against (actual)0.394
xwOBA-against (deserved)0.312

Webb’s wOBA-against sits at 0.394, but the quality of contact underneath says it should be 0.312 — a gap of 0.082, 2.3 standard deviations from the MLB norm over 30 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 202622.7% K | 3.59 ERAProjection
2026-04-17 vs NYM1 ER / 1 K1.0 IP
2026-04-14 @ PHI1 ER / 0 K0.1 IP
2026-04-13 @ PHI0 ER / 1 K0.2 IP
2026-04-11 vs PIT0 ER / 2 K1.0 IP
2026-04-07 @ TB0 ER / 1 K1.0 IP