Pitching

William Kempner

Miami Marlins (AA)
P
Age: 24
Bats/Throws: R/R
6'0" / 222
DOB: 6/18/2001
(24 years, 1 day)
P

Stats

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    Preseason ProjectionsIn-Season ProjectionsMinor LeaguesSpring TrainingCollege
    SeasonTeamLevelAgeWLSVGGSIPdividerK/9BB/9HR/9BABIPLOB%GB%HR/FBdividervFAdividerERAxERAFIPxFIPWAR
    2021GONZNCAA2033111940.27.526.420.66.24672.8%3.105.07
    2022GONZNCAA212108836.012.005.250.50.29176.2%3.003.67
    2022SFGCPX21100203.113.505.400.00.50083.3%71.4%0.0%2.703.043.04
    2022SFGA21000325.29.536.351.59.33375.5%25.0%12.5%6.357.507.15
    2022SFGMiLB21100529.011.006.001.00.39178.3%39.1%12.5%5.005.855.63
    2023SFGA2213114527.09.675.000.00.28056.1%45.7%0.0%4.674.185.27
    2023SFGA+2232023034.012.443.441.32.31179.5%44.3%17.2%2.914.443.77
    2023SFGAA22000101.210.8010.800.00.50080.0%16.7%0.0%5.404.486.21
    2023SFGMiLB2245138562.211.204.310.72.30368.2%43.9%8.3%3.734.334.48
    2025MIAST24000402.213.503.383.38.33383.3%14.3%25.0%6.757.865.64
    2025SteamerPROJ24000101.07.554.001.26.29970.5%41.1%4.784.804.770.0
    2025OOPSYPROJ24000101.67.374.771.27.29768.7%5.145.120.0
    2025MIAA+2412619026.213.163.380.00.32265.6%50.0%0.0%3.042.002.53
    2025MIAAA24000202.115.433.860.00.40066.7%20.0%0.0%3.860.951.93
    2025MIAMiLB2412621029.013.343.410.00.32865.7%47.5%0.0%3.101.922.48
    2025SteamerROS000101.08.054.081.07.30071.7%4.384.340.0
    2025OOPSYROS24000101.58.494.231.19.29869.9%4.624.560.0
    SeasonTeamLevelAgeWLSVGGSIPdividerK/9BB/9HR/9BABIPLOB%GB%HR/FBdividervFAdividerERAxERAFIPxFIPWAR
    2021GONZNCAA2033111940.27.526.420.66.24672.8%3.105.07
    2022GONZNCAA212108836.012.005.250.50.29176.2%3.003.67
    2022SFGCPX21100203.113.505.400.00.50083.3%71.4%0.0%2.703.043.04
    2022SFGA21000325.29.536.351.59.33375.5%25.0%12.5%6.357.507.15
    2022SFGMiLB21100529.011.006.001.00.39178.3%39.1%12.5%5.005.855.63
    2023SFGA2213114527.09.675.000.00.28056.1%45.7%0.0%4.674.185.27
    2023SFGA+2232023034.012.443.441.32.31179.5%44.3%17.2%2.914.443.77
    2023SFGAA22000101.210.8010.800.00.50080.0%16.7%0.0%5.404.486.21
    2023SFGMiLB2245138562.211.204.310.72.30368.2%43.9%8.3%3.734.334.48
    2025MIAST24000402.213.503.383.38.33383.3%14.3%25.0%6.757.865.64
    2025SteamerPROJ24000101.07.554.001.26.29970.5%41.1%4.784.804.770.0
    2025OOPSYPROJ24000101.67.374.771.27.29768.7%5.145.120.0
    2025MIAA+2412619026.213.163.380.00.32265.6%50.0%0.0%3.042.002.53
    2025MIAAA24000202.115.433.860.00.40066.7%20.0%0.0%3.860.951.93
    2025MIAMiLB2412621029.013.343.410.00.32865.7%47.5%0.0%3.101.922.48
    2025SteamerROS000101.08.054.081.07.30071.7%4.384.340.0
    2025OOPSYROS24000101.58.494.231.19.29869.9%4.624.560.0

    Standard

    Preseason ProjectionsIn-Season ProjectionsMinor LeaguesSpring TrainingCollege
    SeasonTeamLevelWLERAGGSQSCGShOSVHLDBSIPTBFHRERHRBBIBBHBPWPBKSO
    2021GONZNCAA333.1011900140.218631211432965034
    2022GONZNCAA213.008800036.015825151222183048
    2022SFGCPX102.7020000003.1154110200305
    2022SFGA006.3532000005.2286441402006
    2022SFGMiLB105.0052000009.043105516023011
    2023SFGA134.671450011027.0124211814015052029
    2023SFGA+322.912300002334.0144281511513055047
    2023SFGAA005.4010000001.2103110200002
    2023SFGMiLB453.733850013362.22785234265300107078
    2025MIAST006.7540000002.2133221101104
    2025SteamerPROJ004.7810000001.0411100001
    2025OOPSYPROJ005.14100001.6721101001
    2025MIAA+123.041900060026.211119119010032139
    2025MIAAA003.8620000002.1102110100104
    2025MIAMiLB123.102100060029.0121211210011033143
    2025SteamerROS004.3810000001.041100001
    2025OOPSYROS004.62100001.5711101001
    SeasonTeamLevelWLERAGGSQSCGShOSVHLDBSIPTBFHRERHRBBIBBHBPWPBKSO
    2021GONZNCAA333.1011900140.218631211432965034
    2022GONZNCAA213.008800036.015825151222183048
    2022SFGCPX102.7020000003.1154110200305
    2022SFGA006.3532000005.2286441402006
    2022SFGMiLB105.0052000009.043105516023011
    2023SFGA134.671450011027.0124211814015052029
    2023SFGA+322.912300002334.0144281511513055047
    2023SFGAA005.4010000001.2103110200002
    2023SFGMiLB453.733850013362.22785234265300107078
    2025MIAST006.7540000002.2133221101104
    2025SteamerPROJ004.7810000001.0411100001
    2025OOPSYPROJ005.14100001.6721101001
    2025MIAA+123.041900060026.211119119010032139
    2025MIAAA003.8620000002.1102110100104
    2025MIAMiLB123.102100060029.0121211210011033143
    2025SteamerROS004.3810000001.041100001
    2025OOPSYROS004.62100001.5711101001

    Advanced

    Preseason ProjectionsIn-Season ProjectionsMinor LeaguesSpring TrainingAveragesCollege
    SeasonTeamLevelK/9BB/9K/BBHR/9dividerK%BB%K-BB%dividerAVGWHIPBABIPLOB%dividerERA-FIP-dividerFIP
    2021GONZNCAA7.526.421.170.6618.3%15.6%2.7%.2051.48.24672.8%5.07
    2022GONZNCAA12.005.252.290.5030.4%13.3%17.1%.1941.28.29176.2%3.67
    2022SFGCPX13.505.402.500.0033.3%13.3%20.0%.3081.80.50083.3%59673.04
    2022SFGA9.536.351.501.5921.4%14.3%7.1%.2731.76.33375.5%1231427.50
    2022SFGMiLB11.006.001.831.0025.6%14.0%11.6%.2861.78.39178.3%991145.85
    2023SFGA9.675.001.930.0023.4%12.1%11.3%.2021.33.28056.1%100884.18
    2023SFGA+12.443.443.621.3232.6%9.0%23.6%.2221.21.31179.5%671014.44
    2023SFGAA10.8010.801.000.0020.0%20.0%0.0%.3753.00.50080.0%1291064.48
    2023SFGMiLB11.204.312.600.7228.1%10.8%17.3%.2181.31.30368.2%83954.33
    2025MIAST13.503.384.003.3830.8%7.7%23.1%.2731.50.33383.3%1461707.86
    2025SteamerPROJ7.554.001.891.2619.0%10.1%8.9%.2601.46.29970.5%4.80
    2025OOPSYPROJ7.374.771.541.2718.1%11.7%6.4%.2601.56.29768.7%5.12
    2025MIAA+13.163.383.900.0035.1%9.0%26.1%.1941.09.32265.6%75502.00
    2025MIAAA15.433.864.000.0040.0%10.0%30.0%.2221.29.40066.7%107260.95
    2025MIAMiLB13.343.413.910.0035.5%9.1%26.4%.1961.10.32865.7%78481.92
    2025SteamerROS8.054.081.971.0720.4%10.3%10.0%.2521.43.30071.7%4.34
    2025OOPSYROS8.494.232.011.1921.6%10.7%10.8%.2491.43.29869.9%4.56
    SeasonTeamLevelK/9BB/9K/BBHR/9dividerK%BB%K-BB%dividerAVGWHIPBABIPLOB%dividerERA-FIP-dividerFIP
    2021GONZNCAA7.526.421.170.6618.3%15.6%2.7%.2051.48.24672.8%5.07
    2022GONZNCAA12.005.252.290.5030.4%13.3%17.1%.1941.28.29176.2%3.67
    2022SFGCPX13.505.402.500.0033.3%13.3%20.0%.3081.80.50083.3%59673.04
    2022SFGA9.536.351.501.5921.4%14.3%7.1%.2731.76.33375.5%1231427.50
    2022SFGMiLB11.006.001.831.0025.6%14.0%11.6%.2861.78.39178.3%991145.85
    2023SFGA9.675.001.930.0023.4%12.1%11.3%.2021.33.28056.1%100884.18
    2023SFGA+12.443.443.621.3232.6%9.0%23.6%.2221.21.31179.5%671014.44
    2023SFGAA10.8010.801.000.0020.0%20.0%0.0%.3753.00.50080.0%1291064.48
    2023SFGMiLB11.204.312.600.7228.1%10.8%17.3%.2181.31.30368.2%83954.33
    2025MIAST13.503.384.003.3830.8%7.7%23.1%.2731.50.33383.3%1461707.86
    2025SteamerPROJ7.554.001.891.2619.0%10.1%8.9%.2601.46.29970.5%4.80
    2025OOPSYPROJ7.374.771.541.2718.1%11.7%6.4%.2601.56.29768.7%5.12
    2025MIAA+13.163.383.900.0035.1%9.0%26.1%.1941.09.32265.6%75502.00
    2025MIAAA15.433.864.000.0040.0%10.0%30.0%.2221.29.40066.7%107260.95
    2025MIAMiLB13.343.413.910.0035.5%9.1%26.4%.1961.10.32865.7%78481.92
    2025SteamerROS8.054.081.971.0720.4%10.3%10.0%.2521.43.30071.7%4.34
    2025OOPSYROS8.494.232.011.1921.6%10.7%10.8%.2491.43.29869.9%4.56