Reference layer
Current snapshot
| Age | 26 |
| Height | 6' 2" |
| Weight | 203 lb |
| Debut | 2021-04-03 |
Player profile / Arizona Diamondbacks
Geraldo Perdomo
SS profile with live context, projection links, and Mithrandir card history when available.
Club Arizona Diamondbacks
Position SS
Roster Active
Status Healthy / active roster
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 | 0.327 |
| xwOBA current pace | 0.338 |
| xwOBA rolling p50 | 0.333 |
| Observed weight | 58% |
xwOBA
0.309
0.320
0.333
0.346
0.358
wOBA
0.323
0.339
0.358
0.377
0.393
ISO
0.108
0.122
0.137
0.152
0.166
K%
10.3%
11.3%
12.5%
13.7%
14.7%
Live percentile strip
Current traits vs projection tick
100th = best in MLB.
Hitting · percentile strip
Barrel%2.0%
12
Exit velocity85.6
20
Hard-hit%32.6%
22
xBA0.311
37
xSLG0.411
17
xwOBA0.338
74
BB%14.6%
94
Bat speed62.8
3
K%11.6%
95
Defense · percentile strip
Arm Runs0.0 · SS
48
Arm Strength89.2 · SS
75
Outs Above Avg2.0 · SS
79
Range Runs1.9 · SS
70
Baserunning · percentile strip
Base Running Runs0.8 · SS
71
SB Success Rate81.8% · SS
58
Sprint Speed26.8 · SS
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 72.2% · rebadged research
83
Avoids Bad TakesHPT 28.8% · rebadged research
20
Correct Decisions66.3% · rebadged research
52
SEAGER+ Plate Discipline103
64
Resists Breaking - horizontalwOBA 0.289 · borderline
40
Resists Breaking - verticalwOBA 0.277 · insufficient sample
50
Resists ChangeupwOBA 0.265 · validated thin sample
84
Resists Cutters + splitterswOBA 0.301 · insufficient sample
98
Resists FastballwOBA 0.386 · validated
4
Resists SinkerwOBA 0.342 · validated
87
Rolling form chart
xwOBA snapshot line
Live snapshot series; true 50/100 PA windows require PA-level logs
Spray profile
Field-coordinate spray profile
188 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 | +0.003 |
| wOBA Δ | +0.023 |
negative regression
Regression watch
Running hot. Expect some cooling.
Perdomo’s wOBA sits at 0.358, but the quality of contact underneath says it should be 0.338 — a gap of 0.020, -0.7 standard deviations from the MLB norm over 301 PA. The results have outrun the underlying process; as the sample grows, expect the numbers to drift back toward the deserved level.
Mithrandir coverage
Module shelf
| Module | Cards | Latest | Signal |
|---|---|---|---|
| Hitting | 1 | 2026-05-22 | Impact contact was the main driver |
Projection links / recent games
Available detail
| Hitter Projections 20260.335 xwOBA | 13 HR | Projection |
| 2026-05-20 vs SF0 HR | 3 RBI / 4 Ch | 0 E | 1-3 | 2B, K, 3 RBI |
| 2026-04-17 vs TOR0 HR | 0 RBI / 7 Ch | 0 E | 1-4 | 2B, K |
| 2026-04-15 @ BAL0 HR | 0 RBI / 3 Ch | 0 E | 1-4 | K, R |
| 2026-04-14 @ BAL0 HR | 0 RBI / 4 Ch | 0 E | 3-4 | K, R, 2 SB |
| 2026-04-13 @ BAL0 HR | 0 RBI / 1 Ch | 0 E | 0-3 | BB, CS |