JEFFERSON CITY JAMMERS
PITCHING LEADERS
02/15/2032
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Team Index | Draft History | Starters: Positional - Pitchers | Registers: Batters - Pitchers | Leaders: Batters - Pitchers
TEAM PITCHING SINGLE SEASON LEADERS TEAM PITCHING CAREER LEADERS
141 IP required for season rate statistics. 500 IP required for career rate statistics.
ERA - SINGLE SEASON
Rank Player ERA Year  
1. Phil Marshall 2.42 2018  
2. Felipe Herrera 3.00 2016  
3. Tae-cho Han 3.56 2022  
4. Charles Hess 3.67 2014  
5. Hyung-kwang Pak 3.83 2024  
6. Jack England 3.97 2018  
7. Hyung-kwang Pak 4.11 2023  
8. José Pérez 4.14 2022  
9. Manuel Martínez 4.15 2025  
10. Chip McMahon 4.15 2015  
ERA - CAREER
Rank Player ERA IP  
         
         
         
         
         
         
         
         
         
         
WINS - SINGLE SEASON
Rank Player W Year  
1. Carlos Mendoza 16 2025  
2. Phil Marshall 13 2018  
3. Felipe Herrera 12 2016  
4. Don Davis 12 2024  
5. Ricardo Mejía 11 2028  
6. Keith Hillock 10 2025  
7. Bob Franklin 10 2019  
8. Tae-cho Han 10 2022  
9. Gerald O'Breslin 10 2014  
10. Manuel Martínez 10 2025  
WINS - CAREER
Rank Player W IP  
1. Carlos Mendoza 31 316.2  
2. Phil Marshall 25 311.2  
3. Felipe Herrera 22 343.1  
4. Tad Dougherty 17 237.1  
5. Harry Rawle 17 316.1  
6. Don Davis 16 250.1  
7. Francisco Nava 16 349.2  
8. Enrico Rúbio 16 151.1  
9. Jack England 15 348.0  
10. Tae-cho Han 15 192.1  
LOSSES - SINGLE SEASON
Rank Player L Year  
1. Bartolo Rochel 14 2024  
2. Hyung-kwang Pak 13 2023  
3. Alfredo Maldonado 13 2014  
4. Keith Hillock 11 2025  
5. Randy Powell 11 2014  
6. Francisco Nava 11 2028  
7. Robbie Bennett 10 2021  
8. Ramón Martínez 10 2024  
9. Álex Galván 10 2022  
10. Jack England 10 2019  
LOSSES - CAREER
Rank Player L IP  
1. Jorge Flores 23 305.2  
2. Jack England 22 348.0  
3. Francisco Nava 22 349.2  
4. Hyung-kwang Pak 20 319.0  
5. Alfredo Maldonado 19 272.0  
6. Harry Rawle 19 316.1  
7. Don Davis 17 250.1  
8. Rafael Vega 17 270.0  
9. Thom Hess 16 236.2  
10. Joshua McErlean 16 238.1  
WINNING PCT - SINGLE SEASON
Rank Player WPct Year  
1. Manuel Martínez .909 2025  
2. Phil Marshall .812 2018  
3. Felipe Herrera .600 2016  
4. Jack England .562 2018  
5. Tae-cho Han .556 2022  
6. Helge Lavinsky .545 2023  
7. Hyung-kwang Pak .533 2024  
8. José Pérez .529 2022  
9. Chip McMahon .500 2015  
10. Charles Hess .500 2014  
WINNING PCT - CAREER
Rank Player WPct IP  
         
         
         
         
         
         
         
         
         
         
SAVES - SINGLE SEASON
Rank Player SV Year  
1. Rubén Carbajal 41 2024  
2. José Durán 38 2030  
3. Flint Fowler 33 2027  
4. Eric Karcher 32 2015  
5. Don Davis 31 2025  
6. Bob Gamble 31 2018  
7. Phil Marshall 29 2020  
8. Chip Norris 28 2031  
9. Edwin Jordan 24 2026  
10. Eric Karcher 23 2014  
SAVES - CAREER
Rank Player SV IP  
1. Eric Karcher 55 133.2  
2. Rubén Carbajal 43 87.1  
3. Phil Marshall 39 311.2  
4. José Durán 38 111.1  
5. Bob Gamble 36 218.0  
6. Don Davis 35 250.1  
7. Flint Fowler 34 213.1  
8. Chip Norris 28 50.0  
9. Edwin Jordan 24 108.0  
10. Andrés Hernández 19 132.0  
WAR - SINGLE SEASON
Rank Player WAR Year  
1. Felipe Herrera 6.2 2016  
2. Manuel Martínez 5.8 2025  
3. Phil Marshall 4.6 2018  
4. Hyung-kwang Pak 4.0 2024  
5. Wilson Rosário 3.8 2026  
6. Tae-cho Han 3.8 2022  
7. Andrés Elías 3.7 2021  
8. Hyung-kwang Pak 3.6 2023  
9. Will Black 3.5 2024  
10. Phil Marshall 3.4 2019  
WAR - CAREER
Rank Player WAR IP  
1. Phil Marshall 10.3 311.2  
2. Felipe Herrera 10.2 343.1  
3. Hyung-kwang Pak 7.6 319.0  
4. Harry Rawle 6.6 316.1  
5. Eric Karcher 6.3 133.2  
6. Francisco Nava 6.1 349.2  
7. Flint Fowler 6.1 213.1  
8. Jorge Flores 6.0 305.2  
9. Manuel Martínez 5.8 160.2  
10. Tae-cho Han 5.6 192.1  
GAMES PITCHED - SINGLE SEASON
Rank Player G Year  
1. Paul Richards 90 2021  
2. Ron Hill 87 2021  
3. Víctor González 86 2022  
4. Donnie Lewis 75 2018  
5. Joshua McErlean 69 2021  
6. Carlos Mendoza 67 2025  
7. José Aguilar 67 2022  
8. Patrick Gardner 66 2031  
9. Robbie Bennett 66 2021  
10. Eric Karcher 66 2015  
GAMES PITCHED - CAREER
Rank Player G IP  
1. Donnie Lewis 142 267.0  
2. Carlos Mendoza 136 316.2  
3. Don Davis 134 250.1  
4. Joshua McErlean 133 238.1  
5. Eric Karcher 118 133.2  
6. Bob Gamble 115 218.0  
7. Phil Marshall 112 311.2  
8. Ron Hill 111 207.1  
9. Tad Dougherty 110 237.1  
10. Paul Richards 110 156.2  
GAMES STARTED - SINGLE SEASON
Rank Player GS Year  
1. Hyung-kwang Pak 36 2023  
2. Helge Lavinsky 34 2023  
3. Felipe Herrera 34 2016  
4. Thom Hess 32 2021  
5. Chip McMahon 31 2015  
6. Jack England 30 2018  
7. Phil Marshall 30 2018  
8. Randy Powell 29 2014  
9. Kenny Gardner 29 2014  
10. Hyung-kwang Pak 29 2024  
GAMES STARTED - CAREER
Rank Player GS IP  
1. Francisco Nava 75 349.2  
2. Jack England 70 348.0  
3. Harry Rawle 70 316.1  
4. Hyung-kwang Pak 65 319.0  
5. Jorge Flores 62 305.2  
6. Felipe Herrera 58 343.1  
7. Rafael Vega 58 270.0  
8. Alfredo Maldonado 54 272.0  
9. Graeme Comer 50 235.0  
10. Thom Hess 49 236.2  
COMPLETE GAMES - SINGLE SEASON
Rank Player CG Year  
1. Álex Galván 2 2022  
2. Francisco Nava 1 2029  
3. Andy Rivera 1 2029  
4. Keith Hillock 1 2025  
5. Yoriyuki Honda 1 2022  
6. Sisto Fubini 1 2028  
7. José Aguilar 0 2023  
8. Ramón Martínez 0 2023  
9. Ramón Martínez 0 2024  
10. Víctor González 0 2022  
COMPLETE GAMES - CAREER
Rank Player CG IP  
1. Álex Galván 2 138.0  
2. Sisto Fubini 1 190.2  
3. Keith Hillock 1 124.2  
4. Yoriyuki Honda 1 199.1  
5. Francisco Nava 1 349.2  
6. Andy Rivera 1 148.0  
7. José Aguilar 0 99.2  
8. Tolentino Andrade 0 2.2  
9. José Arreola 0 199.2  
10. Robbie Bennett 0 178.1  
SHUTOUTS - SINGLE SEASON
Rank Player SHO Year  
1. Sisto Fubini 1 2028  
2. Andy Rivera 1 2029  
3. Joshua McErlean 0 2021  
4. Akihiro Fujii 0 2022  
5. Tolentino Andrade 0 2022  
6. José Aguilar 0 2022  
7. José Aguilar 0 2023  
8. Ramón Martínez 0 2023  
9. Ramón Martínez 0 2024  
10. Víctor González 0 2022  
SHUTOUTS - CAREER
Rank Player SHO IP  
1. Sisto Fubini 1 190.2  
2. Andy Rivera 1 148.0  
3. José Aguilar 0 99.2  
4. Tolentino Andrade 0 2.2  
5. José Arreola 0 199.2  
6. Robbie Bennett 0 178.1  
7. Will Black 0 165.1  
8. Sam Bowman 0 36.0  
9. Judd Burris 0 43.0  
10. Rudy Callendare 0 87.1  
INNINGS PITCHED - SINGLE SEASON
Rank Player IP Year  
1. Felipe Herrera 180.0 2016  
2. Hyung-kwang Pak 166.1 2023  
3. Manuel Martínez 160.2 2025  
4. Chip McMahon 160.1 2015  
5. Tae-cho Han 154.1 2022  
6. Jack England 154.0 2018  
7. Hyung-kwang Pak 152.2 2024  
8. Phil Marshall 152.1 2018  
9. Kenny Gardner 151.0 2014  
10. Helge Lavinsky 147.0 2023  
INNINGS PITCHED - CAREER
Rank Player IP IP  
1. Francisco Nava 349.2 349.2  
2. Jack England 348.0 348.0  
3. Felipe Herrera 343.1 343.1  
4. Hyung-kwang Pak 319.0 319.0  
5. Carlos Mendoza 316.2 316.2  
6. Harry Rawle 316.1 316.1  
7. Phil Marshall 311.2 311.2  
8. Jorge Flores 305.2 305.2  
9. Chip McMahon 305.2 305.2  
10. Alfredo Maldonado 272.0 272.0  
HITS ALLOWED - SINGLE SEASON
Rank Player H Year  
1. Keith Hillock 184 2025  
2. Carlos Mendoza 175 2025  
3. Víctor González 174 2022  
4. Manuel Martínez 174 2025  
5. Felipe Herrera 170 2016  
6. Don Davis 168 2024  
7. Ron Hill 166 2021  
8. Donnie Lewis 166 2019  
9. Hyung-kwang Pak 166 2023  
10. Ricardo Mejía 159 2029  
HITS ALLOWED - CAREER
Rank Player H IP  
1. Francisco Nava 411 349.2  
2. Jorge Flores 407 305.2  
3. Carlos Mendoza 407 316.2  
4. Harry Rawle 388 316.1  
5. Donnie Lewis 375 267.0  
6. Rafael Vega 365 270.0  
7. Jack England 355 348.0  
8. Tad Dougherty 335 237.1  
9. Don Davis 322 250.1  
10. Hyung-kwang Pak 314 319.0  
HOME RUNS ALLOWED - SINGLE SEASON
Rank Player HR Year  
1. Ron Hill 42 2021  
2. Paul Richards 33 2021  
3. Don Davis 29 2024  
4. José Pérez 28 2022  
5. Francisco Nava 26 2030  
6. Yoriyuki Honda 26 2022  
7. Thom Hess 24 2021  
8. Joshua McErlean 24 2021  
9. Frenk Notenboom 23 2024  
10. Donnie Lewis 23 2019  
HOME RUNS ALLOWED - CAREER
Rank Player HR IP  
1. Jack England 59 348.0  
2. Ron Hill 58 207.1  
3. Carlos Mendoza 53 316.2  
4. Francisco Nava 53 349.2  
5. Joshua McErlean 50 238.1  
6. Don Davis 48 250.1  
7. Donnie Lewis 48 267.0  
8. Rafael Vega 43 270.0  
9. Thom Hess 41 236.2  
10. Chip McMahon 41 305.2  
WALKS ALLOWED - SINGLE SEASON
Rank Player BB Year  
1. Martin Pierson 91 2025  
2. Carlos Mendoza 86 2025  
3. Ricardo Mejía 84 2029  
4. Jorge Sierra 77 2025  
5. Jack England 76 2019  
6. Charles Hess 75 2014  
7. Don Davis 74 2024  
8. Keith Hillock 72 2025  
9. Randy Powell 72 2014  
10. Carlos Mendoza 71 2027  
WALKS ALLOWED - CAREER
Rank Player BB IP  
1. Carlos Mendoza 226 316.2  
2. Jack England 167 348.0  
3. Tad Dougherty 153 237.1  
4. Don Davis 143 250.1  
5. Ricardo Mejía 137 196.1  
6. Joshua McErlean 132 238.1  
7. Rafael Vega 127 270.0  
8. Francisco Pérez 126 195.0  
9. Chip McMahon 124 305.2  
10. Francisco Nava 124 349.2  
WALKS PER 9 IP - SINGLE SEASON
Rank Player BB9 Year  
1. Phil Marshall 1.6 2018  
2. Felipe Herrera 1.6 2016  
3. Hyung-kwang Pak 1.8 2023  
4. Manuel Martínez 2.7 2025  
5. Hyung-kwang Pak 2.7 2024  
6. José Pérez 2.8 2022  
7. Tae-cho Han 2.8 2022  
8. Jack England 3.1 2018  
9. Kenny Gardner 3.1 2014  
10. Chip McMahon 3.3 2015  
WALKS PER 9 IP - CAREER
Rank Player BB9 IP  
         
         
         
         
         
         
         
         
         
         
STRIKEOUTS - SINGLE SEASON
Rank Player K Year  
1. Felipe Herrera 166 2016  
2. Francisco Vélez 162 2019  
3. Sibrand Shackleton 159 2022  
4. Álex Galván 153 2022  
5. Tae-cho Han 152 2022  
6. Helge Lavinsky 140 2023  
7. Hyung-kwang Pak 139 2023  
8. Bob Franklin 137 2019  
9. Ron Hill 129 2021  
10. Manuel Martínez 128 2025  
STRIKEOUTS - CAREER
Rank Player K IP  
1. Felipe Herrera 316 343.1  
2. Phil Marshall 281 311.2  
3. Jack England 275 348.0  
4. Chip McMahon 266 305.2  
5. Francisco Nava 261 349.2  
6. Bob Gamble 259 218.0  
7. Hyung-kwang Pak 248 319.0  
8. Joshua McErlean 246 238.1  
9. Thom Hess 218 236.2  
10. Harry Rawle 203 316.1  
STRIKEOUTS PER 9 IP - SINGLE SEASON
Rank Player K9 Year  
1. Tae-cho Han 8.9 2022  
2. Helge Lavinsky 8.6 2023  
3. Felipe Herrera 8.3 2016  
4. Randy Powell 7.6 2014  
5. José Pérez 7.5 2022  
6. Hyung-kwang Pak 7.5 2023  
7. Manuel Martínez 7.2 2025  
8. Phil Marshall 6.9 2018  
9. Chip McMahon 6.6 2015  
10. Hyung-kwang Pak 6.4 2024  
STRIKEOUTS PER 9 IP - CAREER
Rank Player K9 IP  
         
         
         
         
         
         
         
         
         
         
K/BB - SINGLE SEASON
Rank Player K/BB Year  
1. Felipe Herrera 5.19 2016  
2. Phil Marshall 4.30 2018  
3. Hyung-kwang Pak 4.09 2023  
4. Tae-cho Han 3.17 2022  
5. José Pérez 2.71 2022  
6. Manuel Martínez 2.67 2025  
7. Hyung-kwang Pak 2.37 2024  
8. Helge Lavinsky 2.09 2023  
9. Chip McMahon 2.00 2015  
10. Jack England 1.89 2018  
K/BB - CAREER
Rank Player K/BB IP  
         
         
         
         
         
         
         
         
         
         
WHIP - SINGLE SEASON
Rank Player WHIP Year  
1. Phil Marshall 1.02 2018  
2. Tae-cho Han 1.12 2022  
3. Felipe Herrera 1.12 2016  
4. Hyung-kwang Pak 1.20 2023  
5. José Pérez 1.22 2022  
6. Chip McMahon 1.25 2015  
7. Jack England 1.25 2018  
8. Hyung-kwang Pak 1.27 2024  
9. Charles Hess 1.29 2014  
10. Randy Powell 1.32 2014  
WHIP - CAREER
Rank Player WHIP IP  
         
         
         
         
         
         
         
         
         
         
OAVG - SINGLE SEASON
Rank Player OAVG Year  
1. Charles Hess .212 2014  
2. Randy Powell .218 2014  
3. Tae-cho Han .219 2022  
4. Phil Marshall .228 2018  
5. Chip McMahon .238 2015  
6. José Pérez .246 2022  
7. Jack England .246 2018  
8. Felipe Herrera .247 2016  
9. Helge Lavinsky .247 2023  
10. Hyung-kwang Pak .250 2024  
OAVG - CAREER
Rank Player OAVG IP  
         
         
         
         
         
         
         
         
         
         
OSLG - SINGLE SEASON
Rank Player OSLG Year  
1. Charles Hess .316 2014  
2. Phil Marshall .352 2018  
3. Felipe Herrera .354 2016  
4. Tae-cho Han .356 2022  
5. Hyung-kwang Pak .381 2024  
6. Randy Powell .388 2014  
7. Manuel Martínez .389 2025  
8. Chip McMahon .390 2015  
9. Hyung-kwang Pak .394 2023  
10. Jack England .414 2018  
OSLG - CAREER
Rank Player OSLG IP  
         
         
         
         
         
         
         
         
         
         
OOPS - SINGLE SEASON
Rank Player OOPS Year  
1. Phil Marshall .614 2018  
2. Felipe Herrera .636 2016  
3. Tae-cho Han .637 2022  
4. Charles Hess .638 2014  
5. Hyung-kwang Pak .687 2023  
6. Hyung-kwang Pak .690 2024  
7. Chip McMahon .704 2015  
8. Randy Powell .708 2014  
9. Manuel Martínez .712 2025  
10. Jack England .733 2018  
OOPS - CAREER
Rank Player OOPS IP  
         
         
         
         
         
         
         
         
         
         
RWAR - SINGLE SEASON
Rank Player rWAR Year  
1. Felipe Herrera 7.4 2016  
2. Manuel Martínez 6.5 2025  
3. Phil Marshall 6.4 2018  
4. Wilson Rosário 4.8 2026  
5. Felipe Herrera 4.6 2015  
6. John Chapman 4.4 2031  
7. Jack England 4.3 2018  
8. Alfredo Maldonado 4.2 2015  
9. Eric Karcher 4.0 2015  
10. Tae-cho Han 3.7 2022  
RWAR - CAREER
Rank Player rWAR IP  
1. Felipe Herrera 13.8 343.1  
2. Phil Marshall 12.6 311.2  
3. Graeme Comer 6.8 235.0  
4. Francisco Nava 6.8 349.2  
5. Manuel Martínez 6.5 160.2  
6. Eric Karcher 6.4 133.2  
7. Chip McMahon 6.0 305.2  
8. Hyung-kwang Pak 5.7 319.0  
9. Jorge Flores 5.7 305.2  
10. Bob Gamble 5.6 218.0  
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