Reference layer
Current snapshot
| Age | 25 |
| Height | 6' 0" |
| Weight | 180 lb |
| Debut | 2025-08-01 |
Player profile / Miami Marlins
Jakob Marsee
CF · Bats/Throws L/L · 6' 0", 180 lb · Age 25
Club Miami Marlins
Position CF
Roster Current MLB team
Status Healthy / active roster
Traditional line
Season by season
| PA | R | H | HR | SB | AVG | OBP | SLG | OPS | |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 234 | 28 | 61 | 5 | 14 | .292 | .363 | .478 | .841 |
| 2026 | 612 | 83 | 119 | 11 | 23 | .232 | .348 | .361 | .709 |
| 2 Seasons | 846 | 111 | 180 | 16 | 37 | .249 | .352 | .395 | .747 |
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.
34
Offense
percentile
percentile
Rolling projection
Preseason / current pace / Bayesian update
Rolling bands shrink current-season signal toward the preseason prior until the sample earns more weight.
| xwOBA preseason | 0.336 |
| xwOBA current pace | 0.314 |
| xwOBA rolling p50 | 0.320 |
| Observed weight | 74% |
xwOBA
0.297
0.308
0.320
0.332
0.342
wOBA
0.307
0.318
0.331
0.343
0.355
ISO
0.117
0.128
0.140
0.152
0.163
K%
18.8%
19.8%
20.8%
21.9%
22.9%
Live percentile strip
Current traits vs projection tick
100th = best in MLB.
Hitting · percentile strip
Barrel%2.4%
16
-36 vs proj
Exit velocity85.3
22
Hard-hit%34.5%
33
-16 vs proj
xBA0.310
39
xSLG0.444
29
xwOBA0.314
62
BB%12.5%
90
+51 vs proj
Bat speed66.3
15
K%20.5%
64
Defense · percentile strip
Arm Runs-2.4 · CF
9
Arm Strength97.7 · CF
80
Outs Above Avg9.0 · CF
98
Range Runs7.8 · CF
93
Baserunning · percentile strip
Base Running Runs0.6 · CF
57
SB Success Rate63.6% · CF
16
Sprint Speed27.9 · CF
61
Mithrandir+
Plate skills: swing decisions and pitch-type resistance
Our research metrics for how this hitter controls the strike zone and handles each pitch family.
Avoids Bad ChasesST 74.7% · rebadged research
92
Avoids Bad TakesHPT 25.3% · rebadged research
47
Correct Decisions69.8% · rebadged research
84
Resists FastballwOBA 0.309 · validated
92
SEAGER+ Plate Discipline110
90
Resists Breaking - horizontalwOBA 0.304 · borderline
23
Resists Breaking - verticalwOBA 0.309 · insufficient sample
5
Resists ChangeupwOBA 0.293 · validated thin sample
22
Resists Cutters + splitterswOBA 0.360 · insufficient sample
5
Resists SinkerwOBA 0.326 · validated
95
Rolling form chart
xwOBA snapshot line
Live snapshot series; true 50/100 PA windows require PA-level logs
Spray profile
Field-coordinate spray profile
278 Statcast batted-ball coordinates from the pitch-event feed (2026). Direction profile remains as the v1 context layer when coordinate density is limited.
Zone profile
Aggregate zone heatmap
Aggregate zone metrics from seasonal Statcast leaderboards.
Bat tracking
Swing path, attack angle, bat speed
Aggregate Savant bat-tracking metrics; not per-swing motion capture. The full swing, with the recommended path overlaid, lives in the 3D Swing Simulator.
Live layer
Delta / regression
| xwOBA Δ | +0.008 |
| wOBA Δ | +0.025 |
negative regression
Regression watch
Running hot. Expect some cooling.
Marsee’s wOBA sits at 0.331, but the quality of contact underneath says it should be 0.314 — a gap of 0.017, -0.7 standard deviations from the MLB norm over 625 PA. The results have outrun the underlying process; as the sample grows, expect the numbers to drift back toward the deserved level.
Comp Engine · 2026 profile shape
Closest profiles
| Player | Similarity | Agrees on | Open |
|---|---|---|---|
| Loftin, Nick KC · R | 0.75 | Max exit velocitySprint speed | Player · Projection |
| Perdomo, Geraldo AZ · L | 0.74 | Barrel rateIn-zone contact | Player · Projection |
| Collins, Isaac KC · L | 0.71 | Max exit velocityWalk rate | Player · Projection |
| Keaschall, Luke MIN · R | 0.67 | Ground-ball rateAvg exit velocity | Player · Projection |
Profile-shape similarity, not results: six weighted feature groups standardized within this season's qualified hitters.
Mithrandir coverage
Module shelf
| Module | Cards | Latest | Signal |
|---|---|---|---|
| Hitting | 4 | 2026-08-15 | Impact contact was the main driver |
| Fielding | 27 | 2026-09-25 | 2 chances | 0 difficult plays | Run Exp -0.243 |
Projection links / recent games
Available detail
| Hitter Projections 20260.306 xwOBA | 9 HR | Projection |
| 2026-08-15 @ CIN1 HR | 1 RBI / 0 Ch | 0 E | 4-4 | HR, RBI, 2 R |
| 2026-04-20 vs STL0 HR | 0 RBI / 3 Ch | 0 E | 0-3 | BB, K |
| 2026-04-17 vs MIL0 HR | 0 RBI / 1 Ch | 0 E | 0-4 | BB, R |
| 2026-04-15 @ ATL0 HR | 0 RBI / 3 Ch | 0 E | 0-4 | BB, 2 K |
| 2026-04-14 @ ATL0 HR | 1 RBI / 3 Ch | 0 E | 2-3 | BB, RBI, R |