Prospect Baseline Prospect Baseline
Model Last Run Sep 25, 2026 · 2:59 PM ET

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

Player profile

Gabe Mosser

SEA · AAA · P Development List

Seattle Mariners · Age at assessment: 30.3 · Bats: R · Throws: R

Compare
Assessment saved: · Stats updated:

Assessment notes

Rank is ordered by Prospect Score, the model's 1-100 composite score. Median outcome is only one input; performance, track record, age-to-level context, high outcome, confidence, and risk also affect rank. Present performance is lifting the composite above the long-term median outcome

PB Rank#6,312
Prospect Score15
Median16
Performance40
Trend+1.4%

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 Range+1.4%
161626
LowMedianHigh
206099
Performance 40

Model history

Median movement
First recorded 24 Latest recorded 16
28 15.5 3 2026-06-04 · Median 24 2026-06-05 · Median 24 2026-06-06 · Median 24 2026-06-07 · Median 24 2026-06-08 · Median 7.7 2026-06-09 · Median 7.7 2026-06-10 · Median 7.7 2026-06-11 · Median 8.4 2026-06-12 · Median 8.4 2026-06-13 · Median 8.4 2026-06-14 · Median 8.4 2026-06-15 · Median 8.4 2026-06-16 · Median 8.4 2026-06-17 · Median 8 2026-06-18 · Median 8 2026-06-19 · Median 8 2026-06-20 · Median 8 2026-06-21 · Median 8 2026-06-22 · Median 8 2026-06-23 · Median 8 2026-06-24 · Median 8 2026-06-25 · Median 8 2026-06-26 · Median 8 2026-06-28 · Median 8 2026-06-29 · Median 8 2026-06-30 · Median 8 2026-07-01 · Median 8 2026-07-03 · Median 18 2026-07-05 · Median 18 2026-07-07 · Median 18 2026-07-09 · Median 18 2026-07-11 · Median 17 2026-07-12 · Median 17 2026-07-14 · Median 17 2026-07-16 · Median 17 2026-07-21 · Median 17 2026-07-22 · Median 17 2026-07-23 · Median 17 2026-07-24 · Median 16 2026-07-25 · Median 16 2026-07-26 · Median 16 2026-07-27 · Median 16 2026-07-28 · Median 16 2026-07-29 · Median 17 2026-07-30 · Median 17 2026-07-31 · Median 17 2026-08-01 · Median 17 2026-08-03 · Median 17 2026-08-05 · Median 17 2026-08-07 · Median 17 2026-08-08 · Median 17 2026-08-09 · Median 17 2026-08-10 · Median 17 2026-08-11 · Median 17 2026-08-13 · Median 17 2026-08-14 · Median 17 2026-08-16 · Median 16 2026-08-17 · Median 16 2026-08-18 · Median 16 2026-08-19 · Median 16 2026-08-20 · Median 16 2026-08-22 · Median 16 2026-08-23 · Median 16.4 2026-08-25 · Median 16.4 2026-08-27 · Median 15.5 2026-08-28 · Median 15.5 2026-09-01 · Median 15.5 2026-09-02 · Median 15.5 2026-09-03 · Median 15.5 2026-09-05 · Median 15.5 2026-09-06 · Median 15.5 2026-09-09 · Median 14.9 2026-09-14 · Median 15.1 2026-09-15 · Median 15.1 2026-09-16 · Median 15 2026-09-17 · Median 15 2026-09-18 · Median 15 2026-09-19 · Median 15 2026-09-21 · Median 16 2026-09-22 · Median 16 2026-09-24 · Median 16 2026-09-25 · Median 16 2026-06-04 2026-09-25

2026-09-25 · Median 16

Saved median assessments. Gaps indicate unavailable or non-comparable observations.
View recorded values
DateMedian
2026-09-2516
2026-09-2416
2026-09-2216
2026-09-2116
2026-09-1915
2026-09-1815
2026-09-1715
2026-09-1615
2026-09-1515.1
2026-09-1415.1
2026-09-0914.9
2026-09-0615.5
2026-09-0515.5
2026-09-0315.5
2026-09-0215.5
2026-09-0115.5
2026-08-2815.5
2026-08-2715.5
2026-08-2516.4
2026-08-2316.4
2026-08-2216
2026-08-2016
2026-08-1916
2026-08-1816
2026-08-1716
2026-08-1616
2026-08-1417
2026-08-1317
2026-08-1117
2026-08-1017
2026-08-0917
2026-08-0817
2026-08-0717
2026-08-0517
2026-08-0317
2026-08-0117
2026-07-3117
2026-07-3017
2026-07-2917
2026-07-2816
2026-07-2716
2026-07-2616
2026-07-2516
2026-07-2416
2026-07-2317
2026-07-2217
2026-07-2117
2026-07-1617
2026-07-1417
2026-07-1217
2026-07-1117
2026-07-0918
2026-07-0718
2026-07-0518
2026-07-0318
2026-07-018
2026-06-308
2026-06-298
2026-06-288
2026-06-268
2026-06-258
2026-06-248
2026-06-238
2026-06-228
2026-06-218
2026-06-208
2026-06-198
2026-06-188
2026-06-178
2026-06-168.4
2026-06-158.4
2026-06-148.4
2026-06-138.4
2026-06-128.4
2026-06-118.4
2026-06-107.7
2026-06-097.7
2026-06-087.7
2026-06-0724
2026-06-0624
2026-06-0524
2026-06-0424

2026 season

Current season · regular season
G28
IP138.1
ERA4.55
WHIP1.34
K/96.4
BB/92.7
K-BB%9.5%

Tacoma Rainiers · AAA · Updated

Scouting Scenario Range

Model Range+1.4%
161626
LowMedianHigh
206099
Performance 40

Profile Context

RiskLow Risk · 37
MLB / Model Watch
Confidence60
TypePitcher

Backtested Forecasts

Separate from scouting grades
2027 MiLB production36.5
Historical 80% error band14–59
MLB arrival in 3 years14%
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 daysAll teamsAll levels114.9844021.226121226211.488.72
Year-by-year regular season
YearTeamLevelWLERAGGSSVIPHRERHRBBSOWHIPK/9
2026Tacoma RainiersAAA884.5528260138.114476701442981.346.38
2025Lehigh Valley IronPigsAAA455.291717083.18850491936771.498.32
2025Reading Fightin PhilsAA245.0188041.1392823613501.2610.89
20252 teams · TotalAll levels695.2025250124.2127787225491271.419.17
2024El Paso ChihuahuasAAA775.4028260133.1146838015481031.466.95
2023San Antonio MissionsAA144.97109038.04326211015311.537.34
2023Lake Elsinore StormSingle-A018.101103.15430332.408.10
2023ACL PadresACL203.0062012.0168412191.5014.25
20233 teams · TotalAll levels354.731712053.16438281120531.588.94
2022San Antonio MissionsAA014.9455023.227141348121.484.56
2021Fort Wayne TinCapsHigh-A484.392114080.0804239723721.298.10
2019Lake Elsinore StormHigh-A304.0085036.0402016513341.478.50
2019Fort Wayne TinCapsSingle-A454.251414072.0804234412761.289.50
20192 teams · TotalAll levels754.1722190108.012062509251101.349.17
2018Fort Wayne TinCapsSingle-A110.0030012.081003180.9213.50

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.