Prospect Baseline Prospect Baseline
Model Last Run Sep 24, 2026 · 8:41 AM ET

Included in the latest imported public model. All figures reflect the saved assessment dates.

Player profile

Adan Vallenilla

SEA · DSL · P

Seattle Mariners · Age at assessment: 20.7 · Bats: R · Throws: R

Performance Signal Only
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Assessment saved: · Stats updated:

Scouting comparison unavailable

Current performance can be evaluated, but a tool-to-results comparison requires verified scouting grades

Insufficient Evidence · 0%
PB Rank#1,714
Prospect Score50
Median49
Performance59
Trend0.0%

Tool vs observed results

Percentile scale

No tool-to-results comparison is available in this saved assessment. The recorded model range is shown below.

Model Range0.0%
394963
LowMedianHigh
206099
Performance 59

Model history

Median movement
First recorded 35 Latest recorded 49
53 40.5 28 2026-06-04 · Median 35 2026-06-05 · Median 32 2026-06-06 · Median 32 2026-06-07 · Median 32 2026-06-08 · Median 32 2026-06-09 · Median 32 2026-06-10 · Median 32 2026-06-11 · Median 32 2026-06-12 · Median 32 2026-06-13 · Median 32 2026-06-14 · Median 32 2026-06-15 · Median 32 2026-06-16 · Median 32 2026-06-17 · Median 32 2026-06-18 · Median 32 2026-06-19 · Median 32 2026-06-20 · Median 32 2026-06-21 · Median 32 2026-06-22 · Median 32 2026-06-23 · Median 32 2026-06-24 · Median 32 2026-06-25 · Median 32 2026-06-26 · Median 32 2026-06-28 · Median 32 2026-06-29 · Median 32 2026-06-30 · Median 32 2026-07-01 · Median 32 2026-07-03 · Median 34 2026-07-05 · Median 41 2026-07-07 · Median 41 2026-07-09 · Median 41 2026-07-11 · Median 41 2026-07-12 · Median 41 2026-07-14 · Median 41 2026-07-16 · Median 41 2026-07-21 · Median 41 2026-07-22 · Median 41 2026-07-23 · Median 41 2026-07-24 · Median 39 2026-07-25 · Median 41 2026-07-26 · Median 41 2026-07-27 · Median 41 2026-07-28 · Median 41 2026-07-29 · Median 41 2026-07-30 · Median 41 2026-07-31 · Median 41 2026-08-01 · Median 41 2026-08-03 · Median 41 2026-08-05 · Median 43 2026-08-07 · Median 43 2026-08-08 · Median 43 2026-08-09 · Median 46 2026-08-10 · Median 46 2026-08-11 · Median 46 2026-08-13 · Median 46 2026-08-14 · Median 49 2026-08-16 · Median 49 2026-08-17 · Median 49 2026-08-18 · Median 49 2026-08-19 · Median 49 2026-08-20 · Median 49 2026-08-22 · Median 49 2026-08-23 · Median 48.7 2026-08-25 · Median 48.7 2026-08-27 · Median 49 2026-08-28 · Median 49 2026-09-01 · Median 49 2026-09-02 · Median 49 2026-09-03 · Median 49 2026-09-05 · Median 49 2026-09-06 · Median 49 2026-09-09 · Median 49 2026-09-14 · Median 48.8 2026-09-15 · Median 49 2026-09-16 · Median 49 2026-09-17 · Median 49 2026-09-18 · Median 49 2026-09-19 · Median 49 2026-09-21 · Median 49 2026-09-22 · Median 49 2026-09-24 · Median 49 2026-06-04 2026-09-24

2026-09-24 · Median 49

Saved median assessments. Gaps indicate unavailable or non-comparable observations.
View recorded values
DateMedian
2026-09-2449
2026-09-2249
2026-09-2149
2026-09-1949
2026-09-1849
2026-09-1749
2026-09-1649
2026-09-1549
2026-09-1448.8
2026-09-0949
2026-09-0649
2026-09-0549
2026-09-0349
2026-09-0249
2026-09-0149
2026-08-2849
2026-08-2749
2026-08-2548.7
2026-08-2348.7
2026-08-2249
2026-08-2049
2026-08-1949
2026-08-1849
2026-08-1749
2026-08-1649
2026-08-1449
2026-08-1346
2026-08-1146
2026-08-1046
2026-08-0946
2026-08-0843
2026-08-0743
2026-08-0543
2026-08-0341
2026-08-0141
2026-07-3141
2026-07-3041
2026-07-2941
2026-07-2841
2026-07-2741
2026-07-2641
2026-07-2541
2026-07-2439
2026-07-2341
2026-07-2241
2026-07-2141
2026-07-1641
2026-07-1441
2026-07-1241
2026-07-1141
2026-07-0941
2026-07-0741
2026-07-0541
2026-07-0334
2026-07-0132
2026-06-3032
2026-06-2932
2026-06-2832
2026-06-2632
2026-06-2532
2026-06-2432
2026-06-2332
2026-06-2232
2026-06-2132
2026-06-2032
2026-06-1932
2026-06-1832
2026-06-1732
2026-06-1632
2026-06-1532
2026-06-1432
2026-06-1332
2026-06-1232
2026-06-1132
2026-06-1032
2026-06-0932
2026-06-0832
2026-06-0732
2026-06-0632
2026-06-0532
2026-06-0435

2026 season

Current season · regular season
G11
IP39.0
ERA3.23
WHIP1.08
K/911.8
BB/92.5
K-BB%25.5%

DSL Mariners · DSL · Updated

Scouting Scenario Range

Model Range0.0%
394963
LowMedianHigh
206099
Performance 59

Profile Context

RiskLow Risk · 32
MLB / Model Watch
Confidence50
TypePitcher

Backtested Forecasts

Separate from scouting grades
2027 MiLB production61.1
Historical 80% error band36–86
MLB arrival in 3 years4%
Productive MLB role in 3 years1%

The next-season score assumes at least 20 IP. A productive MLB role means a regular playing-time season with above-average measured hitting or pitching production. This is not a WAR forecast.

Scouting Tools

Tool grades unavailable from verified public scouting reports.

Player Stats

Recent regular season
PeriodTeamLevelWLERAGGSSVIPHRERHRBBSOWHIPK/9
Last 7 daysNo recent game logs available
Last 30 daysNo recent game logs available
Year-by-year regular season
YearTeamLevelWLERAGGSSVIPHRERHRBBSOWHIPK/9
2026DSL MarinersDSL113.231111039.0311614211511.0811.77

Regular season only. Totals combine team and level stints. Recent windows overlap and use cached game logs. Stats refreshed: 2026-09-22T00:11:19.

More Seattle Mariners profiles

Organization reflects each player's saved assessment.