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 | 435 | 76 | 101 | 22 | 16 | .256 | .322 | .475 | .797 |
| 4 Seasons | 1383 | 188 | 294 | 55 | 56 | .235 | .298 | .421 | .719 |
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.
69
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 | 0.323 |
| xwOBA rolling p50 | 0.309 |
| Observed weight | 67% |
xwOBA
0.280
0.294
0.309
0.324
0.338
wOBA
0.339
0.353
0.368
0.383
0.397
ISO
0.175
0.189
0.204
0.220
0.233
K%
23.9%
25.2%
26.7%
28.1%
29.4%
Live percentile strip
Current traits vs projection tick
100th = best in MLB.
Hitting · percentile strip
Barrel%6.9%
80
+16 vs proj
Exit velocity88.4
55
Hard-hit%42.9%
72
xBA0.324
57
xSLG0.600
80
xwOBA0.323
72
+27 vs proj
BB%7.4%
36
Bat speed71.9
78
K%24.4%
43
+37 vs proj
Defense · percentile strip
Arm Runs-0.1 · 3B
23
Arm Strength91.0 · 3B
77
Outs Above Avg-3.0 · 3B
14
Range Runs-0.2 · 3B
52
Baserunning · percentile strip
Base Running Runs4.3 · 3B
93
Bolts12.0 · 3B
65
SB Success Rate92.9% · 3B
87
Sprint Speed28.8 · 3B
86
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 68.5% · rebadged research
65
Avoids Bad TakesHPT 27.0% · rebadged research
32
Correct Decisions68.3% · rebadged research
72
SEAGER+ Plate Discipline102
56
Resists Breaking - horizontalwOBA 0.297 · borderline
33
Resists Breaking - verticalwOBA 0.267 · insufficient sample
84
Resists ChangeupwOBA 0.290 · validated thin sample
27
Resists Cutters + splitterswOBA 0.358 · insufficient sample
7
Resists FastballwOBA 0.356 · validated
21
Resists SinkerwOBA 0.337 · validated
85
Rolling form chart
xwOBA snapshot line
Live snapshot series; true 50/100 PA windows require PA-level logs
Spray profile
Field-coordinate spray profile
210 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 | +0.025 |
| wOBA Δ | +0.070 |
negative regression
Regression watch
Running hot. Expect some cooling.
Gelof’s wOBA sits at 0.368, but the quality of contact underneath says it should be 0.323 — a gap of 0.045, -1.7 standard deviations from the MLB norm over 447 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 | 0.63 | Strikeout rateFly-ball rate | Player · Projection |
| Carroll, Corbin AZ · L | 0.61 | Sweet-spot ratexwOBA on contact | Player · Projection |
| Abrams, CJ WSH · L | 0.60 | Whiff rateOppo rate | Player · Projection |
| Happ, Ian CHC · L | 0.60 | Whiff rateHard-hit 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 | 4 | 2026-09-13 | Disciplined swing decisions drove the score |
| Fielding | 22 | 2026-09-25 | 4 chances | 0 difficult plays | Run Exp -0.662 |
Projection links / recent games
Available detail
| 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 |