Reference layer
Current snapshot
| MLB bio context is unavailable. |
Player profile / MIA
Jakob Marsee
Player · Bats/Throws L/L · 6' 0", 180 lb · Age 25
Club MIA
Position --
Roster Active
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 | 389 | 47 | 64 | 5 | 19 | .197 | .319 | .295 | .614 |
| 2 Seasons | 623 | 75 | 125 | 10 | 33 | .234 | .336 | .367 | .703 |
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.
25
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.
Pending
Rolling player projection appears after current-season Statcast and projection joins refresh.
Live percentile strip
Current traits vs projection tick
100th = best in MLB.
Hitting · percentile strip
Barrel%2.0%
13
Exit velocity85.1
18
Hard-hit%33.5%
26
xBA0.299
25
xSLG0.426
21
xwOBA0.303
45
BB%12.5%
87
Bat speed67.3
22
K%21.8%
54
Defense · percentile strip
Arm Runs-1.5 · CF
13
Arm Strength95.0 · CF
65
Outs Above Avg5.0 · CF
96
Range Runs4.1 · CF
86
Baserunning · percentile strip
Base Running Runs0.3 · CF
51
SB Success Rate64.7% · CF
18
Sprint Speed27.9 · CF
65
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 72.9% · rebadged research
88
Avoids Bad TakesHPT 26.9% · rebadged research
34
Correct Decisions67.7% · rebadged research
65
Resists FastballwOBA 0.295 · validated
99
SEAGER+ Plate Discipline106
76
Resists Breaking - horizontalwOBA 0.275 · borderline
78
Resists Breaking - verticalwOBA 0.294 · insufficient sample
14
Resists ChangeupwOBA 0.289 · validated thin sample
26
Resists Cutters + splitterswOBA 0.337 · insufficient sample
36
Resists SinkerwOBA 0.338 · validated
90
Rolling form chart
xwOBA snapshot line
Live snapshot series; true 50/100 PA windows require PA-level logs
Spray profile
Field-coordinate spray profile
176 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 | -- |
| wOBA Δ | -- |
positive regression
Regression watch
Unlucky so far. Better days ahead.
Marsee’s wOBA sits at 0.297, but the quality of contact underneath says it should be 0.303 — a gap of 0.006, 0.2 standard deviations from the MLB norm over 400 PA. The results have been worse than the process deserves; as the sample grows, expect the numbers to climb back toward the underlying level.
Comp Engine · 2026 profile shape
Closest profiles
| Player | Similarity | Agrees on | Open |
|---|---|---|---|
| Collins, Isaac KC · L | 0.80 | Max exit velocitySweet-spot rate | Player · Projection |
| Gilbert, Drew SF · L | 0.66 | Pull ratexwOBA on contact | Player · Projection |
| Perdomo, Geraldo AZ · L | 0.63 | Barrel rateIn-zone contact | Player · Projection |
| Martin, Austin MIN · R | 0.63 | xwOBA on contactOppo rate | 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 | 3 | 2026-04-21 | Impact contact was the main driver |
Projection links / recent games
Available detail
| 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 |
| 2026-04-13 @ ATL0 HR | 0 RBI / 5 Ch | 0 E | 1-4 | BB, 2 R, SB |