Reference layer
Current snapshot
| Age | 31 |
| Height | 6' 4" |
| Weight | 220 lb |
| Debut | 2020-08-25 |
Player profile / Athletics
Jonah Heim
C · Bats/Throws S/R · 6' 4", 220 lb · Age 31
Club Athletics
Position C
Roster Current MLB team
Status Healthy / active roster
Traditional line
Season by season
| PA | R | H | HR | SB | AVG | OBP | SLG | OPS | |
|---|---|---|---|---|---|---|---|---|---|
| 2024 | 491 | 45 | 101 | 13 | 1 | .220 | .267 | .336 | .603 |
| 2025 | 433 | 38 | 84 | 11 | 3 | .213 | .271 | .332 | .603 |
| 2026 | 390 | 34 | 73 | 13 | 0 | .204 | .262 | .366 | .628 |
| 7 Seasons | 2591 | 256 | 528 | 81 | 11 | .222 | .279 | .370 | .649 |
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.
30
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 | 0.299 |
| xwOBA current pace | 0.285 |
| xwOBA rolling p50 | 0.290 |
| Observed weight | 65% |
xwOBA
0.267
0.278
0.290
0.302
0.313
wOBA
0.262
0.275
0.291
0.306
0.320
ISO
0.136
0.148
0.161
0.174
0.186
K%
16.7%
17.7%
18.9%
20.0%
21.1%
Live percentile strip
Current traits vs projection tick
100th = best in MLB.
Hitting · percentile strip
Barrel%4.2%
40
Exit velocity87.1
42
Hard-hit%32.2%
24
-19 vs proj
xBA0.282
14
xSLG0.449
30
xwOBA0.285
30
BB%7.0%
33
Bat speed68.4
34
K%17.9%
79
Defense · percentile strip
Blocking Runs-2.3 · C
3
Catcher Throwing-2.2 · C
12
Framing Runs-1.6 · C
32
Outs Above Avg-1.0 · C
25
Pop Time2.0 · C
19
Range Runs-0.6 · C
25
Baserunning · percentile strip
Sprint Speed25.1 · C
6
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 64.6% · rebadged research
46
Avoids Bad TakesHPT 28.8% · rebadged research
19
Correct Decisions64.5% · rebadged research
32
SEAGER+ Plate Discipline97
30
Resists Breaking - horizontalwOBA 0.255 · borderline
97
Resists Breaking - verticalwOBA 0.288 · insufficient sample
27
Resists ChangeupwOBA 0.263 · validated thin sample
86
Resists Cutters + splitterswOBA 0.298 · insufficient sample
94
Resists FastballwOBA 0.347 · validated
33
Resists SinkerwOBA 0.338 · 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
186 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 | -0.006 |
| wOBA Δ | -0.001 |
negative regression
Regression watch
Running hot. Expect some cooling.
Heim’s wOBA sits at 0.291, but the quality of contact underneath says it should be 0.285 — a gap of 0.006, -0.2 standard deviations from the MLB norm over 402 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 |
|---|---|---|---|
| Grissom, Vaughn LAA · R | 0.81 | Sweet-spot rateAvg exit velocity | Player · Projection |
| Lee, Brooks MIN · L | 0.76 | Bat speedxwOBA on contact | Player · Projection |
| Rocchio, Brayan CLE · L | 0.75 | Whiff rateChase rate | Player · Projection |
| Varsho, Daulton TOR · L | 0.74 | Pull rateWhiff 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 | 2026-07-05 | Impact contact carried uneven swing decisions |
| Fielding | 11 | 2026-09-26 | 1 chances | 0 difficult plays | Run Exp -0.736 |
Projection links / recent games
Available detail
| Hitter Projections 20260.291 xwOBA | 13 HR | Projection |
| 2026-08-15 vs TEX0 HR | 0 RBI / 0 Ch | 0 E | 1-3 | 2B, BB |
| 2026-04-11 vs CLE0 HR | 0 RBI / 6 Ch | 1 E | 1-4 |
| 2026-04-08 @ LAA0 HR | 1 RBI / 10 Ch | 0 E | 1-4 | 2B, K, RBI |
| 2026-04-07 @ LAA0 HR | 1 RBI / 14 Ch | 0 E | 1-4 | RBI |
| 2026-04-03 @ AZ0 HR | 0 RBI / 5 Ch | 0 E | 0-2 |