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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | K9 | YEAR | Open Postseason Career Leaderboard |
|---|---|---|---|---|
| 1 | Jake Thompson# | 12.122 | 2021 | |
| 2 | Toby Kelly# | 11.687 | 2025 | |
| 3 | Kensaku Yamaguchi# | 11.653 | 2024 | |
| 4 | Carlos Rodon# | 11.118 | 2022 | |
| 5 | Ben Jordan# | 10.915 | 2024 | |
| 6 | Jose Fernandez# | 10.800 | 2018 | |
| 7 | Matt Wisler# | 10.588 | 2016 | |
| 8 | Jim Bartlett# | 10.537 | 2024 | |
| 9 | Evan Scribner | 10.200 | 2021 | |
| 10 | Zack Greinke | 9.783 | 2015 | |
| 11 | Ethan Small# | 9.295 | 2025 | |
| 12 | Grayson Garvin# | 9.269 | 2023 | |
| 13 | Sandy Koufax# | 9.138 | 2024 | |
| 14 | Chris Sale# | 9.000 | 2018 | |
| 14 | Nick Pratto# | 9.000 | 2025 | |
| 14 | Cole Irvin# | 9.000 | 2021 | |
| 17 | Felix Hernandez | 8.836 | 2016 | |
| 18 | Chris Sale# | 8.654 | 2016 | |
| 19 | Anthony Molina# | 8.591 | 2025 | |
| 20 | Charles King# | 8.571 | 2025 | |
| 21 | Jose Urena# | 8.554 | 2025 | |
| 22 | Tyler Glasnow# | 8.526 | 2018 | |
| 22 | Noah Murdock# | 8.526 | 2025 | |
| 24 | Sonny Gray# | 8.494 | 2017 | |
| 25 | Stephen Strasburg | 8.486 | 2017 | |
| 26 | Cal García# | 8.471 | 2025 | |
| 26 | Matt Wisler# | 8.471 | 2018 | |
| 28 | Damien Magnifico# | 8.400 | 2022 | |
| 29 | Aaron Blair# | 8.345 | 2024 | |
| 30 | Alex Reyes# | 8.308 | 2025 | |
| 31 | Alex Wood# | 8.265 | 2017 | |
| 32 | Noah Syndergaard# | 8.100 | 2015 | |
| 33 | Noah Syndergaard# | 7.986 | 2020 | |
| 34 | Matt Krook# | 7.941 | 2023 | |
| 35 | Reggie Lawson# | 7.855 | 2020 | |
| 35 | William Heflin# | 7.855 | 2025 | |
| 37 | Matt Krook# | 7.830 | 2024 | |
| 37 | Anthony Molina# | 7.830 | 2024 | |
| 39 | Noah Syndergaard# | 7.780 | 2019 | |
| 40 | Cole Hamels | 7.773 | 2016 | |
| 41 | Jerad Eickhoff# | 7.714 | 2024 | |
| 41 | Cole Hamels | 7.714 | 2021 | |
| 43 | Jackson Kowar# | 7.657 | 2020 | |
| 44 | Max Scherzer | 7.606 | 2017 | |
| 45 | Aaron Blair# | 7.573 | 2023 | |
| 46 | Sonny Gray# | 7.560 | 2018 | |
| 47 | Robby Stone# | 7.500 | 2023 | |
| 48 | Jake Arrieta | 7.393 | 2015 | |
| 49 | Jerad Eickhoff# | 7.313 | 2020 | |
| 50 | Zack Greinke | 7.281 | 2016 | |
| 51 | Daniel Norris | 7.269 | 2016 | |
| 52 | Joe Gray# | 7.254 | 2023 | |
| 53 | Jerad Eickhoff# | 7.172 | 2019 | |
| 54 | Archie Bradley | 7.125 | 2015 | |
| 55 | Chris Sale# | 7.062 | 2025 | |
| 56 | Masahiro Tanaka | 6.983 | 2018 | |
| 57 | Juan Hillman# | 6.894 | 2023 | |
| 57 | Jacob deGrom | 6.894 | 2015 | |
| 59 | Matt Boyd# | 6.873 | 2025 | |
| 60 | Sandy Koufax# | 6.851 | 2023 | |
| 61 | Takahiro Norimoto# | 6.750 | 2020 | |
| 62 | Takahiro Norimoto# | 6.612 | 2021 | |
| 63 | Jose Urena# | 6.480 | 2024 | |
| 64 | Masahiro Tanaka | 6.457 | 2017 | |
| 65 | Marcus Stroman# | 6.407 | 2015 | |
| 66 | Shelby Miller# | 6.395 | 2024 | |
| 67 | Julio Urias# | 6.353 | 2025 | |
| 68 | Javier Medina# | 6.268 | 2023 | |
| 69 | Matt Wisler# | 6.231 | 2017 | |
| 70 | Ben Jordan# | 6.203 | 2025 | |
| 71 | Danny Duffy | 6.113 | 2023 | |
| 72 | Madison Bumgarner# | 6.039 | 2015 | |
| 73 | Chris Sale# | 6.000 | 2022 | |
| 73 | Noah Murdock# | 6.000 | 2024 | |
| 75 | Marcus Stroman# | 5.934 | 2019 | |
| 76 | Marcus Stroman# | 5.870 | 2021 | |
| 77 | Zach Petrick# | 5.838 | 2024 | |
| 78 | Cole Hamels | 5.815 | 2015 | |
| 79 | Aaron Nola# | 5.786 | 2021 | |
| 80 | Matt Wisler# | 5.625 | 2022 | |
| 81 | Garrett Richards | 5.510 | 2016 | |
| 82 | Jake Thompson# | 5.492 | 2019 | |
| 83 | Zach Petrick# | 5.464 | 2023 | |
| 84 | Blake Snell# | 5.143 | 2023 | |
| 85 | Gerrit Cole | 5.121 | 2015 | |
| 86 | Francisco Liriano | 4.959 | 2015 | |
| 87 | Chris Sale# | 4.860 | 2017 | |
| 88 | Jake Arrieta | 4.821 | 2016 | |
| 89 | Sonny Gray# | 4.500 | 2016 | |
| 90 | Hisashi Iwakuma | 2.700 | 2016 |
