Mithrandir Metrics
Player Miami Marlins Refreshed Jun 1 06:00 AM ET
Player profile / Miami Marlins

Jakob Marsee

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

Cards
3
Modules
1
Live Δ
yes
Club Miami Marlins Position CF 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 preseason0.336
xwOBA current pace0.296
xwOBA rolling p500.314
Observed weight54%
xwOBA
0.283 0.298 0.314 0.331 0.346
wOBA
0.262 0.279 0.298 0.317 0.335
ISO
0.101 0.118 0.136 0.155 0.172
K%
19.7% 21.1% 22.7% 24.2% 25.6%
Live percentile strip

Current traits vs projection tick

100th = best in MLB.

2026-06-01
Hitting · percentile strip
BB%12.5%
83 +48 vs proj
Barrel%2.3%
18 -31 vs proj
Bat speed67.7
25
Exit velocity85.3
17
Hard-hit%36.3%
34
K%23.3%
40 -23 vs proj
xBA0.291
23
xSLG0.423
21
xwOBA0.296
37
Defense · percentile strip
Arm Runs-0.8 · CF
26
Arm Strength95.0 · CF
72
Outs Above Avg4.0 · CF
96
Range Runs3.2 · CF
88
Baserunning · percentile strip
Base Running Runs1.3 · CF
87
SB Success Rate71.4% · CF
29
Sprint Speed27.9 · CF
67
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 73.4% · rebadged research
87
Avoids Bad TakesHPT 26.0% · rebadged research
41
Correct Decisions68.2% · rebadged research
70
SEAGER+ Plate Discipline106
80
Resists Breaking - horizontalwOBA 0.290 · borderline
37
Resists Breaking - verticalwOBA 0.298 · insufficient sample
9
Resists ChangeupwOBA 0.283 · validated thin sample
30
Resists Cutters + splitterswOBA 0.339 · insufficient sample
31
Resists FastballwOBA 0.302 · validated
97
Resists SinkerwOBA 0.331 · validated
94
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 Marsee, Jakob · Live snapshot series; true 50/100 PA windows require PA-level logs LG AVG 0.313 2026-05-17: 0.2862026-05-19: 0.2952026-05-21: 0.2982026-05-23: 0.2942026-05-24: 0.2942026-05-25: 0.2942026-05-26: 0.2962026-05-28: 0.2972026-05-29: 0.2972026-05-30: 0.2972026-05-31: 0.2992026-06-01: 0.296 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 Marsee, Jakob · Aggregate zone metrics; not pitch-by-pitch locations Zone: 48%48%Chase: 23%23%Whiff: 17%17%Zone contact: 92%92%Contact: 83%83%Hard hit: 36%36% 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 Marsee, Jakob · aggregate bat-tracking arc Swing tilt 29.3° Length 6.7 ft Ideal path 48% MITHRANDIR · CHARTS
Mithrandir Metrics ATTACK ANGLE Parameterized Mithrandir chart rendered as SVG for templates and exports. Attack Angle Marsee, Jakob · aggregate attack vector Attack angle 5.9° Direction -6.1° MITHRANDIR · CHARTS
Mithrandir Metrics BAT SPEED DISTRIBUTION Parameterized Mithrandir chart rendered as SVG for templates and exports. Bat Speed Marsee, Jakob · aggregate bat speed marker 60 mph 85 mph Avg bat speed 70.5 mph Hard swing rate 6% Whiff / swing 13% MITHRANDIR · CHARTS
Reference layer

Current snapshot

Age24
Height6' 0"
Weight180 lb
Debut2025-08-01
Live layer

Delta / regression

xwOBA Δ-0.010
wOBA Δ-0.008

negative regression

Mithrandir coverage

Module shelf

ModuleCardsLatestSignal
Hitting32026-04-21Impact contact was the main driver
Projection links / recent games

Available detail

Hitter Projections 20260.306 xwOBA | 9 HRProjection
2026-04-20 vs STL0 HR | 0 RBI / 3 Ch | 0 E0-3 | BB, K
2026-04-17 vs MIL0 HR | 0 RBI / 1 Ch | 0 E0-4 | BB, R
2026-04-15 @ ATL0 HR | 0 RBI / 3 Ch | 0 E0-4 | BB, 2 K
2026-04-14 @ ATL0 HR | 1 RBI / 3 Ch | 0 E2-3 | BB, RBI, R
2026-04-13 @ ATL0 HR | 0 RBI / 5 Ch | 0 E1-4 | BB, 2 R, SB