Jack Jasiak

P Akron RubberDucks
Age 26 RHP 6'0" / 210 lbs AA peak 0.3 · 2028
Overview
AAPROSPECT
ETA2029MLB%2%
YearAgeLvl / TeamGGSIPERAFIPK%BB%WARMLE rates
202423ALynchburg Hil…322674.573.4020.6%7.3%—K 15.2% · BB 8.6% · FIP 4.59
202524MIX2 levels400693.382.4525.5%6.3%—K 19.9% · BB 7.1% · FIP 3.24
202625MIX2 levels390654.593.5628.7%7.2%—K 25.2% · BB 7.4% · FIP 3.57
2027PROJ26MLBCLE670704.054.0522.4%6.9%0.4
2028PROJ38% MLB27MLBCLE250264.104.1122.5%7.2%0.1
2029PROJ60% MLB28MLBCLE380404.174.2122.4%7.5%0.2
Next 3 projected WAR 0.7Projected rows: MLB playing time only, park and league context applied.
Contract
No contract data on file.
Scouting grades · 20-80
Stuff45Control55Command55
Career WAR0 WAR median (P10 -0 / P90 2, comp-based) · star 0% · didn't stick 90%
CompsSimon Castro (age 27) · Joe Broussard (age 26) · Santiago Casilla (age 27)
2027 FULL-SEASON PROJECTIONrates below = full-season projection
showingPROJ
wRC+ AGAINSTvL 110102vR 94
ERA4.05
FIP4.05
K%22.4%
BB%6.9%
K-BB%15.5%
Proj IP70
Value2027 · WAR
Runs saved vs league avg · 70 IP
K: +0.1 runs (Runs saved by strikeouts vs lg-avg K%)+0KBB: +1.7 runs (Runs saved by walk suppression vs lg-avg BB%)+2BBCONTACT: -0.8 runs (Runs saved on contact quality (HR suppression) vs lg)-1CONTACTSTAM: +4.5 runs (Replacement credit for innings volume)+5STAMTotal WAR: +0.58 (70 IP)+0.6WAR
0.40.10.2272829
Grades · Contract
Scouting Grades
STUF4545
CTRL5555
CMD5555
K†5555

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 industry-standard fWAR.

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)
202322A MLELynchburg Hillcats32069307503750%2.112.1%14.2%-2.2%2.1%4.465.03—
202322A RAWLynchburg Hillcats32069307503750%2.116.3%12.1%4.2%1.6%4.464.21—
202423A MLELynchburg Hillcats32267301622266%2.115.2%8.6%6.6%3.1%4.574.59—
202423A MLELynchburg Hillcats32267301622266%2.115.2%8.6%6.6%3.1%4.574.59—
202423A RAWLynchburg Hillcats32267301622266%2.120.6%7.3%13.3%2.0%4.573.40—
202524MIX MLE2 levels40069302771940%1.719.9%7.1%12.7%1.7%3.383.24—
202524MIX MLE2 levels40069302771940%1.719.9%7.1%12.7%1.7%3.383.24—
202524MIX RAW2 levels40069302771940%1.725.5%6.3%19.2%1.3%3.382.45—
202625MIX MLE2 levels390652798020100%1.725.2%7.4%17.8%3.0%4.593.57—
202625MIX MLE2 levels390652798020100%1.725.2%7.4%17.8%3.0%4.593.57—
202625MIX RAW2 levels390652798020100%1.728.7%7.2%21.5%3.6%4.593.56—
▸ 2027 season — projected remainder (no 2027 stats recorded)
202726MLBCLE67070296662090%1.022.4%6.9%15.5%2.9%4.054.05+0.4
▸ Career projection (2028+) — MLB context, MLB playing time (IP × MLB%)
202827MLB MLECLE66069291652190%1.022.5%7.2%15.2%2.9%4.104.11+0.4
202928MLB MLECLE64067282632190%1.022.4%7.5%14.9%3.0%4.174.21+0.3
203029MLB MLECLE61064270602190%1.022.2%7.8%14.4%3.2%4.284.35+0.1
202827MLB CTXCLE2502611025830%1.022.5%7.2%15.2%2.9%4.104.11+0.1
202928MLB CTXCLE38040169381350%1.122.4%7.5%14.9%3.0%4.174.21+0.2
203029MLB CTXCLE43045190421560%1.022.2%7.8%14.4%3.2%4.284.35+0.1
▸ Career totals — MLB only (actual + projected)
Career— RAW106011146810535140%1.022.3%7.6%14.8%3.1%4.203.86+0.9
/ 200 IP— RAW190020084418963250%1.122.3%7.6%14.8%3.1%4.203.86+1.6
Career— MLE14322701189213112291%1.917.9%9.4%8.5%2.4%4.244.12+0.8
/ 200 IP— MLE106120088215883221%1.917.9%9.4%8.5%2.4%4.244.12+0.8

Career Comps

Completed MLB careers (no pro action in 2+ yrs) whose totals — actual + projected — most resemble this player's. Pool: 1,474 reliever careers (754 from 1990-2025 + 720 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 PROJECTION1.36722.4%7.4%1.164.15
Shawn Tolleson ('16)1.15423.1%8.3%1.283.92
Michael Tonkin ('25)1.65523.2%8.1%1.284.23
Hisanori Takahashi ('13)1.28121.6%8.2%1.073.99
Tim Crews ('87-'92, 3 WAR*)2.17120.8%*6.2%*1.09*4.11*
Barney Schultz ('55-'65, 2 WAR*)1.75824.6%*8.3%*1.28*3.93*
Dave Baldwin ('66-'73, 2 WAR*)1.15622.2%*9.2%*0.96*3.97*