Reference layer
Current snapshot
| Age | 26 |
| Height | 6' 2" |
| Weight | 205 lb |
| Debut | 2023-07-14 |
Player profile / Athletics
Zack Gelof
3B · Bats/Throws R/R · 6' 2", 205 lb · Age 26
Club Athletics
Position 3B
Roster Current MLB team
Status Healthy / active roster
Traditional line
Season by season
| PA | R | H | HR | SB | AVG | OBP | SLG | OPS | |
|---|---|---|---|---|---|---|---|---|---|
| 2024 | 547 | 60 | 105 | 17 | 25 | .211 | .270 | .362 | .632 |
| 2025 | 101 | 12 | 16 | 2 | 1 | .174 | .230 | .272 | .502 |
| 2026 | 333 | 54 | 76 | 14 | 10 | .252 | .318 | .442 | .760 |
| 4 Seasons | 1281 | 166 | 269 | 47 | 50 | .232 | .295 | .409 | .704 |
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.
52
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 | 0.281 |
| xwOBA current pace | 0.302 |
| xwOBA rolling p50 | 0.294 |
| Observed weight | 61% |
xwOBA
0.261
0.277
0.294
0.310
0.326
wOBA
0.322
0.338
0.355
0.373
0.389
ISO
0.152
0.167
0.185
0.202
0.218
K%
24.3%
25.7%
27.4%
29.0%
30.5%
Live percentile strip
Current traits vs projection tick
100th = best in MLB.
Hitting · percentile strip
Barrel%5.0%
53
Exit velocity87.3
44
Hard-hit%41.7%
65
xBA0.313
43
xSLG0.543
63
xwOBA0.302
47
BB%7.6%
39
Bat speed71.8
77
K%24.9%
38
+31 vs proj
Defense · percentile strip
Arm Runs-0.4 · 3B
12
Arm Strength91.0 · 3B
77
Outs Above Avg-2.0 · 3B
18
Range Runs-0.9 · 3B
44
Baserunning · percentile strip
Base Running Runs2.2 · 3B
84
Bolts7.0 · 3B
57
SB Success Rate88.9% · 3B
78
Sprint Speed28.7 · 3B
85
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 68.4% · rebadged research
64
Avoids Bad TakesHPT 28.0% · rebadged research
25
Correct Decisions67.5% · rebadged research
66
SEAGER+ Plate Discipline101
53
Resists Breaking - horizontalwOBA 0.272 · borderline
84
Resists Breaking - verticalwOBA 0.270 · insufficient sample
69
Resists ChangeupwOBA 0.276 · validated thin sample
55
Resists Cutters + splitterswOBA 0.368 · insufficient sample
4
Resists FastballwOBA 0.322 · validated
79
Resists SinkerwOBA 0.350 · validated
68
Rolling form chart
xwOBA snapshot line
Live snapshot series; true 50/100 PA windows require PA-level logs
Spray profile
Field-coordinate spray profile
150 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.
Live layer
Delta / regression
| xwOBA Δ | +0.004 |
| wOBA Δ | +0.058 |
negative regression
Regression watch
Running hot. Expect some cooling.
Gelof’s wOBA sits at 0.355, but the quality of contact underneath says it should be 0.302 — a gap of 0.054, -1.9 standard deviations from the MLB norm over 342 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 |
|---|---|---|---|
| Swanson, Dansby CHC · R | 0.71 | Hard-hit rateIsolated power | Player · Projection |
| Crews, Dylan WSH · R | 0.63 | Strikeout rateHard-hit rate | Player · Projection |
| Hernández, Teoscar LAD · R | 0.60 | In-zone contactGround-ball rate | Player · Projection |
| Peña, Jeremy HOU · R | 0.60 | Barrel rateOppo 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 | 2 | 2026-08-12 | Impact contact carried uneven swing decisions |
| Fielding | 11 | 2026-08-31 | 3 chances | 0 difficult plays | Run Exp -0.461 |
Projection links / recent games
Available detail
| Hitter Projections 20260.298 xwOBA | 10 HR | Projection |
| 2026-08-15 vs TEX0 HR | 0 RBI / 1 Ch | 0 E | 0-4 |
| 2026-05-20 @ LAA0 HR | 0 RBI / 4 Ch | 0 E | 0-5 | K |
| 2026-04-20 @ SEA0 HR | 0 RBI / 1 Ch | 0 E | 0-4 | 2 K |
| 2026-04-17 vs CWS0 HR | 0 RBI / 0 Ch | 0 E | 0-1 |
| 2026-04-14 vs TEX0 HR | 0 RBI / 0 Ch | 0 E | 0-2 | 2 K |