Reference layer
Current snapshot
| Age | 28 |
| Height | 5' 11" |
| Weight | 195 lb |
| Debut | 2022-09-02 |
Player profile / Houston Astros
Yainer Diaz
C · Bats/Throws R/R · 5' 11", 195 lb · Age 28
Club Houston Astros
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 | 619 | 70 | 175 | 16 | 2 | .299 | .325 | .441 | .766 |
| 2025 | 567 | 56 | 139 | 20 | 1 | .256 | .284 | .417 | .701 |
| 2026 | 351 | 37 | 94 | 14 | 0 | .281 | .311 | .458 | .769 |
| 5 Seasons | 1923 | 214 | 509 | 73 | 3 | .279 | .306 | .455 | .761 |
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.
57
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 | 0.339 |
| xwOBA current pace | 0.311 |
| xwOBA rolling p50 | 0.321 |
| Observed weight | 62% |
xwOBA
0.297
0.309
0.321
0.334
0.345
wOBA
0.318
0.333
0.350
0.367
0.382
ISO
0.139
0.153
0.167
0.182
0.195
K%
14.7%
15.8%
17.0%
18.1%
19.2%
Live percentile strip
Current traits vs projection tick
100th = best in MLB.
Hitting · percentile strip
Barrel%5.5%
60
Exit velocity89.1
64
Hard-hit%38.5%
52
-28 vs proj
xBA0.324
57
xSLG0.493
48
xwOBA0.311
58
-23 vs proj
BB%3.6%
6
Bat speed70.9
71
K%15.7%
87
Defense · percentile strip
Blocking Runs-0.6 · C
35
Catcher Throwing-0.0 · C
57
Framing Runs-3.6 · C
18
Pop Time1.9 · C
46
Baserunning · percentile strip
Sprint Speed26.0 · C
16
SB Success Rate0.0% · C
Small sample
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 55.6% · rebadged research
10
Avoids Bad TakesHPT 22.7% · rebadged research
76
Correct Decisions64.8% · rebadged research
34
SEAGER+ Plate Discipline94
20
Resists Breaking - horizontalwOBA 0.305 · borderline
22
Resists Breaking - verticalwOBA 0.259 · insufficient sample
93
Resists ChangeupwOBA 0.302 · validated thin sample
13
Resists Cutters + splitterswOBA 0.315 · insufficient sample
77
Resists FastballwOBA 0.355 · validated
22
Resists SinkerwOBA 0.363 · validated
35
Rolling form chart
xwOBA snapshot line
Live snapshot series; true 50/100 PA windows require PA-level logs
Spray profile
Field-coordinate spray profile
193 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 | -0.023 |
| wOBA Δ | +0.017 |
negative regression
Regression watch
Running hot. Expect some cooling.
Diaz’s wOBA sits at 0.350, but the quality of contact underneath says it should be 0.311 — a gap of 0.039, -1.4 standard deviations from the MLB norm over 363 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 | 0.57 | Whiff rateMax exit velocity | Player · Projection |
| Vargas, Ildemaro AZ · L | 0.54 | Swing lengthMax exit velocity | Player · Projection |
| Herrera, Iván STL · R | 0.51 | xwOBA on contactWhiff rate | Player · Projection |
| Lopez, Otto MIA · R | 0.50 | xwOBA on contactAvg 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 | 2026-09-03 | Impact contact was the main driver |
| Fielding | 6 | 2026-09-22 | 1 chances | 0 difficult plays | Run Exp -0.148 |
Projection links / recent games
Available detail
| Hitter Projections 20260.333 xwOBA | 19 HR | Projection |
| 2026-08-15 vs SEA0 HR | 0 RBI / 2 Ch | 0 E | 0-1 |
| 2026-04-20 @ CLE0 HR | 1 RBI / 7 Ch | 0 E | 1-4 | RBI |
| 2026-04-15 vs COL0 HR | 0 RBI / 15 Ch | 0 E | 0-4 |
| 2026-04-13 @ SEA0 HR | 1 RBI / 3 Ch | 0 E | 1-3 | RBI |
| 2026-04-12 @ SEA1 HR | 1 RBI / 8 Ch | 0 E | 1-3 | HR, RBI, R |