Reference layer
Current snapshot
| Age | 25 |
| Height | 6' 2" |
| Weight | 210 lb |
| Debut | 2022-08-10 |
Player profile / Rancho Cucamonga Quakes
Vaughn Grissom
2B · Bats/Throws R/R · 6' 2", 210 lb · Age 25
Club Rancho Cucamonga Quakes
Position 2B
Roster Injured 10-Day
Status Healthy / active roster
Traditional line
Season by season
| PA | R | H | HR | SB | AVG | OBP | SLG | OPS | |
|---|---|---|---|---|---|---|---|---|---|
| 2023 | 80 | 5 | 21 | 0 | 0 | .280 | .313 | .347 | .660 |
| 2024 | 114 | 10 | 20 | 0 | 2 | .190 | .246 | .219 | .465 |
| 2026 | 155 | 14 | 33 | 4 | 0 | .246 | .325 | .410 | .735 |
| 4 Seasons | 505 | 53 | 115 | 9 | 7 | .253 | .313 | .365 | .678 |
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.
62
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 | 0.274 |
| xwOBA current pace | 0.350 |
| xwOBA rolling p50 | 0.305 |
| Observed weight | 41% |
xwOBA
0.262
0.283
0.305
0.328
0.349
wOBA
0.281
0.304
0.330
0.355
0.378
ISO
0.078
0.104
0.132
0.160
0.185
K%
11.8%
14.1%
16.7%
19.3%
21.6%
Live percentile strip
Current traits vs projection tick
100th = best in MLB.
Hitting · percentile strip
Barrel%5.8%
60
+19 vs proj
Exit velocity90.3
78
Hard-hit%46.3%
80
+51 vs proj
xBA0.303
29
xSLG0.507
49
xwOBA0.350
79
+55 vs proj
BB%9.0%
53
+29 vs proj
Bat speed69.8
53
K%11.0%
97
+47 vs proj
Defense · percentile strip
Arm Strength92.5 · 2B
87
Outs Above Avg-1.0 · 2B
26
Range Runs-1.4 · 2B
30
Baserunning · percentile strip
Sprint Speed26.8 · 1B
36
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 70.1% · rebadged research
73
Avoids Bad TakesHPT 27.1% · rebadged research
32
Correct Decisions68.5% · rebadged research
72
Resists Breaking - horizontalwOBA 0.299 · borderline
24
Resists Breaking - verticalwOBA 0.278 · insufficient sample
49
Resists ChangeupwOBA 0.277 · validated thin sample
47
Resists Cutters + splitterswOBA 0.321 · insufficient sample
81
Resists FastballwOBA 0.348 · validated
33
Resists SinkerwOBA 0.349 · validated
75
SEAGER+ Plate Discipline103
61
Rolling form chart
xwOBA snapshot line
Live snapshot series; true 50/100 PA windows require PA-level logs
Spray profile
Field-coordinate spray profile
104 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 | +0.067 |
| wOBA Δ | +0.047 |
positive regression
Regression watch
Unlucky so far. Better days ahead.
Grissom’s wOBA sits at 0.330, but the quality of contact underneath says it should be 0.350 — a gap of 0.020, 0.6 standard deviations from the MLB norm over 155 PA. The results have been worse than the process deserves; as the sample grows, expect the numbers to climb back toward the underlying level.
Mithrandir coverage
Module shelf
| Module | Cards | Latest | Signal |
|---|---|---|---|
| Hitting | 3 | 2026-05-26 | Impact contact was the main driver |
Projection links / recent games
Available detail
| Hitter Projections 20260.282 xwOBA | 4 HR | Projection |
| 2026-05-20 vs ATH0 HR | 0 RBI / 1 Ch | 0 E | 0-3 | HBP |
| 2026-04-14 @ NYY0 HR | 0 RBI / 8 Ch | 0 E | 2-3 | 2 BB, K, R |
| 2026-04-12 @ CIN0 HR | 0 RBI / 2 Ch | 0 E | 1-4 | R |
| 2026-04-11 @ CIN0 HR | 0 RBI / 4 Ch | 0 E | 0-3 | BB |