William Kempner P Jacksonville Jumbo Shrimp
+0.1 WAR
INJURED · Reassigned to Minors (RM)
Age 25 RHP 6'0" / 222 lbs AAA peak 0.5 · 2027
ERA4.38
FIP4.38
xFIP
SIERA
K%25.2%
BB%12.9%
K-BB%12.3%
IP67
trajectory · 10 yrs
0.5peak
2027
OFP40
STUF35
CTRL35
K†5555

Career (MLE) + Projections

Park-neutral MLB-equivalent. MiLB translated via MLE factors. FIP-based WAR vs replacement FIP=5.3 (SP) / 4.95 (RP, <80 IP). FIP+ = runs above league-avg FIP · REP = replacement-level bonus.

YearAge LvlTeam GGSIPBF KBBHR K%BB%HR% ERAFIP WAR
202221ASan Jose Giants5294311615.00
202322AARichmond Flying Squirrels385632787830521.5%12.2%2.2%3.734.04+0.7
202524AAAJacksonville Jumbo Shrimp480682839540227.3%15.5%0.9%2.263.24+1.4
▸ 2026 Season
202625AAAJacksonville Jumbo Shrimp7083621714.50
ROS25MLBMIA27271132615323.4%13.6%2.6%4.634.63+0.1
2026 Total25MLBMIA351494722431.9%15.0%2.6%4.603.56+0.5
▸ 2027+ Projections — Marcel base + age-bracket aging
202726MLBMIA1212672826637723.6%13.1%2.6%4.584.57+0.3
202827MLBMIA1212662806636723.6%12.8%2.6%4.574.56+0.3
202928MLBMIA1212652756535723.5%12.7%2.7%4.574.58+0.3
203029MLBMIA1212642696334723.4%12.7%2.7%4.604.62+0.3
203130MLBMIA1111622616133723.2%12.8%2.8%4.654.68+0.2
203231MLBMIA60602525833723.0%12.9%2.9%4.714.76+0.1
203332MLBMIA57572425532722.7%13.1%3.0%4.794.84+0.1
203433MLBMIA55552315231722.4%13.3%3.0%4.884.94+0.0
203534MLBMIA52522194829722.1%13.5%3.1%4.985.05-0.1
203635MLBMIA49492064528721.7%13.7%3.3%5.095.17-0.1
203736MLBMIA46461934127721.2%13.9%3.4%5.225.30-0.2
▸ Career (all levels · actual + projected)
Career987147640169911126.4%14.2%1.7%3.183.58+2.9
/ 200 IP133102008692291241526.4%14.2%1.7%3.183.58+3.9

Career Path Comps

What happened to similar pitchers from this age · Y-axis: ERA+ (100 = league avg, 150 = elite, 80 = below) · Bands: P10–P90 outer, P25–P75 inner · Gold: OGILVIE projection

Profile at Match Age Next 3 Yrs Career
CompAgeRole FIPK%BB%HR/BFBABIP FIPK%K-BB%IP ΔFIPLow FIPIPMatch
William Kempner (OGILVIE) 4.63 23.4%13.6%2.6% 4.57 23.6%10.7%198 -0.06
Brandon Cunniff R 2027 · 4.25 FIP 26 SU 4.25 24.5%13.2%2.8%.256 4.33 20.3%9.0%115 +0.08 3.88 180 91
Dylan Hall R 2026 · 3.98 FIP 25 SU 3.98 21.0%13.2%1.8%.305 7.30 15.1%2.4%58 +3.32 3.48 153 88
Cameron Gann R 2025 · 4.21 FIP 24 SU 4.21 21.4%12.4%2.4%.296 5.37 21.1%6.8%23 +1.16 3.60 146 86
Tyler Mitzel R 2026 · 4.01 FIP 25 SU 4.01 20.8%12.0%2.1%.323 4.17 23.4%17.9%58 +0.16 4.01 142 85
Chris Jefferson R 2026 · 3.49 FIP 25 SU 3.49 22.4%10.2%1.8%.330 4.95 16.5%3.9%101 +1.46 3.49 140 85
Trey Benton R 2026 · 4.53 FIP 25 SU 4.53 23.8%13.9%3.0%.366 2.92 18.1%7.4%31 -1.61 2.92 139 85
Nathanael Santiago R 2026 · 3.43 FIP 25 SU 3.43 20.3%11.4%1.1%.286 3.56 23.2%10.9%71 +0.13 2.48 138 85
Jason Stoffel R 2027 · 3.60 FIP 26 SU 3.60 23.4%10.1%2.2%.267 3.51 27.2%19.2%59 -0.09 3.51 103 84
Logan Boyer R 2027 · 3.70 FIP 26 SU 3.70 25.0%12.3%2.1%.267 4.91 17.9%1.6%54 +1.21 3.70 121 84
Jake Lee R 2025 · 4.64 FIP 24 SU 4.64 25.7%12.4%3.9%.296 3.50 18.7%10.3%40 -1.14 2.78 181 84
Kyle Hill R 2026 · 3.84 FIP 25 SU 3.84 22.7%14.9%1.4%.282 4.63 23.5%10.8%73 +0.79 3.62 156 84
Dakota Mekkes R 2025 · 4.57 FIP 24 SU 4.57 23.1%15.4%2.7%.290 4.86 16.7%1.8%70 +0.29 2.95 246 84
Mason Vinyard R 2026 · 3.60 FIP 25 SU 3.60 23.4%14.3%1.2%.292 4.41 21.8%7.3%47 +0.81 3.60 154 84
Jesus Pirela R 2027 · 3.85 FIP 26 SW 3.85 23.7%11.6%2.3%.305 3.92 17.1%13.9%45 +0.07 3.23 161 83
Brooks Kriske R 2026 · 3.48 FIP 25 SU 3.48 26.1%12.2%1.9%.245 4.81 28.6%16.5%41 +1.33 3.04 230 83
Layne Henderson R 2026 · 4.47 FIP 25 SU 4.47 22.9%14.8%2.6%.289 4.35 24.4%10.0%126 -0.12 3.91 233 83
Cayne Ueckert R 2026 · 4.44 FIP 25 SU 4.44 24.6%12.9%3.2%.150 5.55 21.4%5.1%124 +1.11 3.94 205 83
Luis Ramirez R 2025 · 3.73 FIP 24 SW 3.73 24.0%12.6%1.9%.286 3.73 104 82
Tommy Kahnle R 2026 · 4.17 FIP 25 SW 4.17 23.8%14.8%2.2%.284 2.58 30.9%21.0%165 -1.59 1.53 433 82
Dakota Donovan R 2026 · 3.49 FIP 25 SU 3.49 21.9%10.3%1.7%.291 3.65 18.9%6.4%50 +0.16 3.16 153 82

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.