Gabe Mosser

P Tacoma Rainiers
Age 31 RHP 6'4" / 185 lbs AAA peak 0.6 · 2027
Overview
AAAPROSPECT
ETA2029MLB%10%
YearAgeLvl / TeamGGSIPERAFIPK%BB%WARMLE rates
202428AAASD28261335.404.1017.6%8.2%—K 15.1% · BB 7.4% · FIP 4.19
202529MIX2 levels25251255.204.8523.3%9.0%—K 19.5% · BB 8.6% · FIP 5.45
202630AAASEA28261384.553.9116.6%7.1%—K 14.3% · BB 6.4% · FIP 4.14
2027PROJ31MLBSEA2294.944.9415.2%7.6%0.0
2028PROJ37% MLB32MLBSEA44255.015.1015.4%8.0%0.1
2029PROJ55% MLB33MLBSEA66344.995.0117.4%7.7%0.2
Next 3 projected WAR 0.3Projected rows: MLB playing time only, park and league context applied.
Contract
No contract data on file.
Scouting grades · 20-80
Stuff45Control50Command45
Career WAR0.0 WAR median (P10 -0.3 / P90 0.0, comp-based) · star 0% · didn't stick 100%
CompsZack Segovia (age 32) · Juan Delgadillo (age 32) · Robert Ellis (age 30)
2027 FULL-SEASON PROJECTIONrates below = full-season projection
showingPROJ
wRC+ AGAINSTvL 127119vR 111
ERA4.94
FIP4.94
K%15.2%
BB%7.6%
K-BB%7.5%
Proj IP87
Value2027 · WAR
Runs saved vs league avg · 87 IP
K: -4.7 runs (Runs saved by strikeouts vs lg-avg K%)-5KBB: +1.0 runs (Runs saved by walk suppression vs lg-avg BB%)+1BBCONTACT: -3.6 runs (Runs saved on contact quality (HR suppression) vs lg)-4CONTACTSTAM: +9.1 runs (Replacement credit for innings volume)+9STAMTotal WAR: +0.19 (87 IP)+0.2WAR
0.50.10.20.0272830
Grades · Contract
Scouting Grades
STUF4545
CTRL5050
CMD4545
K†3040

Contract

No contract data on file. Pre-MLB players and minor-league free agents do not yet have salary projections — entries are added at first 40-man roster placement.

Career Stats + Projections

Real MLB stats plus park-adjusted projections — this season (so far / rest / full), then future seasons and career totals.
basis chips: RAW = as recorded · CTX = with park/league context · A+C = actual + context combined · MLE = level/park-neutral
Methodology▸ how WAR & MLE are computed

Stats are park-neutral MLB equivalents. The "TEAM" column shows current org affiliation only — we do NOT project at that team's park.
Rates (K%, BB%, HR-BF) are park-stripped; MiLB stat lines are translated to their MLB-equivalent via per-level MLE factors.
WAR is computed from projected runs prevented vs a replacement pitcher (the marginal arm a team would call up if this pitcher were unavailable) — calibrated to the standard WAR scale.

YearAge LvlTeam GGSIPBF KBBHR GS%IP/G K%BB%K-BB%HR% ERAFIP WAR
▸ Career — actual stats, one row per year (as recorded, no adjustments)
▸ Career — adjusted (each season translated to a park/league-neutral MLB-equivalent line; levels combined per year)
▸ Model inputs — neutral MLE (past 3 seasons + 2027 so far)
201822A MLEFort Wayne TinCaps30124818300%4.037.5%6.2%31.2%0.0%0.000.73—
201822A RAWFort Wayne TinCaps30124818300%4.037.5%6.2%31.2%0.0%0.000.85—
201923MIX MLE2 levels221910846511025986%4.917.7%6.3%11.5%2.5%4.173.75—
201923MIX RAW2 levels221910846511025986%4.923.7%5.4%18.3%1.9%4.172.84—
202125A+ MLEFort Wayne TinCaps2114803377223767%3.816.5%7.8%8.6%2.5%4.394.05—
202125A+ RAWFort Wayne TinCaps2114803377223767%3.821.4%6.8%14.5%2.1%4.393.30—
202226AA MLESan Antonio Missions55241031284100%4.79.4%8.5%0.9%5.4%4.946.32—
202226AA RAWSan Antonio Missions55241031284100%4.711.7%7.8%3.9%3.9%4.945.30—
202327MIX MLE3 levels17125324153201171%3.117.1%8.5%8.5%7.3%4.726.72—
202327MIX RAW3 levels17125324153201171%3.122.0%8.3%13.7%4.6%4.724.92—
202428AAA MLEEl Paso Chihuahuas2826133585103481593%4.815.1%7.4%7.8%2.6%5.404.19—
202428AAA MLEEl Paso Chihuahuas2826133585103481593%4.815.1%7.4%7.8%2.6%5.404.19—
202428AAA RAWEl Paso Chihuahuas2826133585103481593%4.817.6%8.2%9.4%2.6%5.404.10—
202529MIX MLE2 levels25251255461274925100%5.019.5%8.6%11.0%5.3%5.205.45—
202529MIX MLE2 levels25251255461274925100%5.019.5%8.6%11.0%5.3%5.205.45—
202529MIX RAW2 levels25251255461274925100%5.023.3%9.0%14.3%4.6%5.204.85—
202630AAA MLETacoma Rainiers282613859098421493%4.914.3%6.4%7.9%2.6%4.554.14—
202630AAA MLETacoma Rainiers282613859098421493%4.914.3%6.4%7.9%2.6%4.554.14—
202630AAA RAWTacoma Rainiers282613859098421493%4.916.6%7.1%9.5%2.4%4.553.91—
▸ 2027 season — projected remainder (no 2027 stats recorded)
202731MLBSEA22938631100%4.515.2%7.6%7.5%3.2%4.944.94+0.0
▸ Career projection (2028+) — MLB context, MLB playing time (IP × MLB%)
202832MLB MLESEA111168288442310100%6.215.4%8.0%7.4%3.5%5.015.10+0.2
202933MLB MLESEA101062260452010100%6.217.4%7.7%9.7%3.7%4.995.01+0.3
203034MLB MLESEA885121537189100%6.417.1%8.2%8.9%4.0%5.145.25+0.1
202832MLB CTXSEA44251061684100%6.215.4%8.0%7.4%3.5%5.015.10+0.1
202933MLB CTXSEA663414425115100%5.717.4%7.7%9.7%3.7%4.995.01+0.2
203034MLB CTXSEA44261101994100%6.517.1%8.2%8.9%4.0%5.145.25+0.0
▸ Career totals — MLB only (actual + projected)
Career— RAW141485358602813100%6.116.7%7.9%8.8%3.7%5.044.73+0.7
/ 200 IP— RAW33332008441416631100%6.016.7%7.9%8.8%3.7%5.044.73+1.5
Career— MLE149127673291548621610285%4.516.7%7.4%9.3%3.5%4.704.56+0.6
/ 200 IP— MLE4438200866144643085%4.516.7%7.4%9.3%3.5%4.704.56+0.7

How the minor-league lines were translated

One row per minor-league stint. Open a row to see each step: the raw rate, the park adjustment, the league/level factor, the age adjustment (hitters) and the resulting MLE rate. Factors are the same ones listed on the MLE Factors page.

2026 AAATacoma Rainiers · 138 IPFIP 3.90 → 4.14 (+0.24)K% 16.6% → 14.3%
ComponentRawPark ÷Level factor ×= MLE
K% /BF16.61%—×0.86014.28%
BB% (unintentional) /BF7.12%—×0.9006.41%
HR / BF /BF2.37%÷1.000×1.1002.61%

Factors used: pitcher AAA level factors (Triple-A 2023+ robo-zone set: walks improve on promotion) — K ×0.86, BB ×0.90, HR ×1.10. Pitcher translation is level-wide (no per-league rows, no age adjustment); HR/BF is park-adjusted at half strength (park HR factor 100).

Result: FIP 3.90 → 4.14, computed from the rates in the table with the same formula before and after. The MLE line is not regressed to the mean — regression is applied when seasons are blended into a projection (how).

2025 AAALehigh Valley IronPigs · 83 IPFIP 5.41 → 5.99 (+0.58)K% 20.9% → 18.0%
ComponentRawPark ÷Level factor ×= MLE
K% /BF20.92%—×0.86017.99%
BB% (unintentional) /BF9.78%—×0.9008.80%
HR / BF /BF5.16%÷0.947×1.1006.00%

Factors used: pitcher AAA level factors (Triple-A 2023+ robo-zone set: walks improve on promotion) — K ×0.86, BB ×0.90, HR ×1.10. Pitcher translation is level-wide (no per-league rows, no age adjustment); HR/BF is park-adjusted at half strength (park HR factor 89).

Result: FIP 5.41 → 5.99, computed from the rates in the table with the same formula before and after. The MLE line is not regressed to the mean — regression is applied when seasons are blended into a projection (how).

2025 AAReading Fightin Phils · 41 IPFIP 3.50 → 4.34 (+0.84)K% 28.1% → 22.8%
ComponentRawPark ÷Level factor ×= MLE
K% /BF28.09%—×0.81022.75%
BB% (unintentional) /BF7.30%—×1.1008.03%
HR / BF /BF3.37%÷1.036×1.2003.90%

Factors used: pitcher AA level factors — K ×0.81, BB ×1.10, HR ×1.20. Pitcher translation is level-wide (no per-league rows, no age adjustment); HR/BF is park-adjusted at half strength (park HR factor 107).

Result: FIP 3.50 → 4.34, computed from the rates in the table with the same formula before and after. The MLE line is not regressed to the mean — regression is applied when seasons are blended into a projection (how).

2024 AAAEl Paso Chihuahuas · 133 IPFIP 4.06 → 4.19 (+0.13)K% 17.6% → 15.1%
ComponentRawPark ÷Level factor ×= MLE
K% /BF17.61%—×0.86015.14%
BB% (unintentional) /BF8.21%—×0.9007.38%
HR / BF /BF2.56%÷1.078×1.1002.62%

Factors used: pitcher AAA level factors (Triple-A 2023+ robo-zone set: walks improve on promotion) — K ×0.86, BB ×0.90, HR ×1.10. Pitcher translation is level-wide (no per-league rows, no age adjustment); HR/BF is park-adjusted at half strength (park HR factor 116).

Result: FIP 4.06 → 4.19, computed from the rates in the table with the same formula before and after. The MLE line is not regressed to the mean — regression is applied when seasons are blended into a projection (how).

2023 AASan Antonio Missions · 38 IPFIP 5.94 → 7.87 (+1.93)K% 18.5% → 14.9%
ComponentRawPark ÷Level factor ×= MLE
K% /BF18.45%—×0.81014.95%
BB% (unintentional) /BF8.93%—×1.1009.82%
HR / BF /BF5.95%÷0.820×1.2008.72%

Factors used: pitcher AA level factors — K ×0.81, BB ×1.10, HR ×1.20. Pitcher translation is level-wide (no per-league rows, no age adjustment); HR/BF is park-adjusted at half strength (park HR factor 64).

Result: FIP 5.94 → 7.87, computed from the rates in the table with the same formula before and after. The MLE line is not regressed to the mean — regression is applied when seasons are blended into a projection (how).

2023 ROKACL Padres · 12 IPFIP 1.64 → 3.22 (+1.58)K% 34.5% → 23.5%
ComponentRawPark ÷Level factor ×= MLE
K% /BF34.55%—×0.68023.49%
BB% (unintentional) /BF3.64%—×1.2504.55%
HR / BF /BF1.82%÷0.912×1.4002.79%

Factors used: pitcher ROK level factors — K ×0.68, BB ×1.25, HR ×1.40. Pitcher translation is level-wide (no per-league rows, no age adjustment); HR/BF is park-adjusted at half strength (park HR factor 82).

Result: FIP 1.64 → 3.22, computed from the rates in the table with the same formula before and after. The MLE line is not regressed to the mean — regression is applied when seasons are blended into a projection (how).

2022 AASan Antonio Missions · 24 IPFIP 5.23 → 6.32 (+1.09)K% 11.7% → 9.4%
ComponentRawPark ÷Level factor ×= MLE
K% /BF11.65%—×0.8109.44%
BB% (unintentional) /BF7.77%—×1.1008.54%
HR / BF /BF3.88%÷0.870×1.2005.36%

Factors used: pitcher AA level factors — K ×0.81, BB ×1.10, HR ×1.20. Pitcher translation is level-wide (no per-league rows, no age adjustment); HR/BF is park-adjusted at half strength (park HR factor 74).

Result: FIP 5.23 → 6.32, computed from the rates in the table with the same formula before and after. The MLE line is not regressed to the mean — regression is applied when seasons are blended into a projection (how).

2021 A+Fort Wayne TinCaps · 80 IPFIP 3.30 → 4.05 (+0.75)K% 21.4% → 16.5%
ComponentRawPark ÷Level factor ×= MLE
K% /BF21.36%—×0.77016.45%
BB% (unintentional) /BF6.82%—×1.1507.85%
HR / BF /BF2.08%÷1.057×1.2502.46%

Factors used: pitcher A+ level factors — K ×0.77, BB ×1.15, HR ×1.25. Pitcher translation is level-wide (no per-league rows, no age adjustment); HR/BF is park-adjusted at half strength (park HR factor 111).

Result: FIP 3.30 → 4.05, computed from the rates in the table with the same formula before and after. The MLE line is not regressed to the mean — regression is applied when seasons are blended into a projection (how).

Career Comps

Completed MLB careers (no pro action in 2+ yrs) whose totals — actual + projected — most resemble this player's. Pool: 1,234 reliever careers (754 from 1990-2025 + 480 historical, 1901-2023), also matched on career-to-date at the same age. * Historical (Lahman) careers: rates era-adjusted to 2001-24 league levels; WAR is an OGILVIE proxy.

Player162sIP/yrK%BB%HR/9ERA
OGILVIE CAREER PROJECTION1.36716.1%7.9%1.375.01
Jose Cabrera ('02)1.46816.2%7.9%1.394.95
Carlos Almánzar ('05)1.26016.3%7.9%1.324.82
Steve Kealey ('68-'73, -1 WAR*)1.15418.5%*7.2%*1.32*5.26*
JC Ramírez ('19)1.47216.4%8.4%1.444.71
Chuck Hartenstein ('66-'77, -1 WAR*)1.55913.7%*7.2%*1.50*5.28*
Paul Reuschel ('75-'79, 1 WAR*)2.07916.8%*7.6%*1.29*4.76*