Mithrandir Metrics
Player St. Louis Cardinals Refreshed Jun 1 06:00 AM ET
Player profile / St. Louis Cardinals

Iván Herrera

DH profile with live context, projection links, and Mithrandir card history when available.

Cards
3
Modules
1
Live Δ
yes
Club St. Louis Cardinals Position DH Roster Active Status Healthy / active roster
Rolling projection

Preseason / current pace / Bayesian update

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

2026-06-01
xwOBA preseason0.354
xwOBA current pace0.368
xwOBA rolling p500.361
Observed weight55%
xwOBA
0.337 0.348 0.361 0.374 0.386
wOBA
0.349 0.367 0.387 0.407 0.425
ISO
0.138 0.153 0.169 0.185 0.200
K%
15.3% 16.5% 17.9% 19.2% 20.4%
Live percentile strip

Current traits vs projection tick

100th = best in MLB.

2026-06-01
Hitting · percentile strip
BB%12.8%
85 +32 vs proj
Barrel%5.3%
53
Bat speed72.2
80
Exit velocity89.6
63
Hard-hit%43.0%
63
K%17.3%
78
xBA0.346
71
xSLG0.544
61
xwOBA0.368
86
Defense · percentile strip
Blocking Runs0.3 · C
60
Catcher Throwing-1.3 · C
3
Framing Runs-0.8 · C
38
Pop Time2.0 · C
16
Baserunning · percentile strip
Base Running Runs-1.5 · DH
6
Sprint Speed25.5 · DH
11
SB Success Rate100.0% · DH
Limited
Mithrandir+

Stuff+ and arsenal context

Stuff+ appears when the current pitch-event scoring artifact includes this pitcher; missing coverage is shown explicitly.

2026-06-01
Avoids Bad ChasesST 70.3% · rebadged research
74
Avoids Bad TakesHPT 25.4% · rebadged research
47
Correct Decisions67.3% · rebadged research
60
SEAGER+ Plate Discipline104
71
Resists Breaking - horizontalwOBA 0.295 · borderline
27
Resists Breaking - verticalwOBA 0.286 · insufficient sample
24
Resists ChangeupwOBA 0.320 · validated thin sample
2
Resists Cutters + splitterswOBA 0.323 · insufficient sample
76
Resists FastballwOBA 0.356 · validated
20
Resists SinkerwOBA 0.382 · validated
8
Rolling form chart

xwOBA 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 Herrera, Iván · Live snapshot series; true 50/100 PA windows require PA-level logs LG AVG 0.313 2026-05-17: 0.3612026-05-19: 0.3592026-05-21: 0.3572026-05-23: 0.3612026-05-24: 0.3662026-05-25: 0.3662026-05-26: 0.3622026-05-28: 0.3642026-05-29: 0.3642026-05-30: 0.3642026-05-31: 0.3682026-06-01: 0.368 2026-05-17 2026-06-01 xwOBA MITHRANDIR · CHARTS
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 Swing Zone Profile Herrera, Iván · Aggregate zone metrics; not pitch-by-pitch locations Zone: 45%45%Chase: 26%26%Whiff: 19%19%Zone contact: 90%90%Contact: 81%81%Hard hit: 43%43% Dashed border = aggregate mixed-batter zone proxy MITHRANDIR · CHARTS
Bat tracking

Swing path, attack angle, bat speed

Aggregate Savant bat-tracking metrics; not per-swing motion capture.

2026
Mithrandir Metrics SWING PATH Parameterized Mithrandir chart rendered as SVG for templates and exports. Swing Path Herrera, Iván · aggregate bat-tracking arc Swing tilt 29.8° Length 7.9 ft Ideal path 49% MITHRANDIR · CHARTS
Mithrandir Metrics ATTACK ANGLE Parameterized Mithrandir chart rendered as SVG for templates and exports. Attack Angle Herrera, Iván · aggregate attack vector Attack angle 8.6° Direction -4.0° MITHRANDIR · CHARTS
Mithrandir Metrics BAT SPEED DISTRIBUTION Parameterized Mithrandir chart rendered as SVG for templates and exports. Bat Speed Herrera, Iván · aggregate bat speed marker 60 mph 85 mph Avg bat speed 74.1 mph Hard swing rate 44% Whiff / swing 14% MITHRANDIR · CHARTS
Reference layer

Current snapshot

Age26
Height5' 11"
Weight220 lb
Debut2022-05-24
Live layer

Delta / regression

xwOBA Δ+0.016
wOBA Δ+0.036

negative regression

Mithrandir coverage

Module shelf

ModuleCardsLatestSignal
Hitting32026-05-23Impact contact carried uneven swing decisions
Projection links / recent games

Available detail

Hitter Projections 20260.351 xwOBA | 15 HRProjection
2026-05-20 vs PIT0 HR | 0 RBI / 6 Ch | 0 E0-4
2026-04-20 @ MIA0 HR | 0 RBI / 5 Ch | 0 E1-3 | HBP
2026-04-17 @ HOU1 HR | 3 RBI / 0 Ch | 0 E2-4 | HR, HBP, 3 RBI
2026-04-15 vs CLE0 HR | 0 RBI / 0 Ch | 0 E0-2 | 3 BB
2026-04-14 vs CLE1 HR | 1 RBI / 7 Ch | 0 E1-3 | HR, BB, RBI