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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | K9 | YEAR | Open Postseason Career Leaderboard |
|---|---|---|---|---|
| 1 | Robert Stephenson# | 13.50 | 2014 | |
| 2 | Marcus Stroman# | 12.38 | 2014 | |
| 3 | Clayton Blackburn | 10.38 | 2015 | |
| 4 | Carl Edwards Jr.# | 10.24 | 2015 | |
| 5 | Michael Kopech# | 9.87 | 2018 | |
| 6 | Tyler Thornburg | 9.27 | 2013 | |
| 7 | Ryan Yarbrough# | 8.68 | 2017 | |
| 8 | Henry Owens | 8.10 | 2014 | |
| 9 | Pierce Johnson# | 8.05 | 2015 | |
| 10 | Scott Snodgress | 7.94 | 2013 | |
| 11 | Sam Bachman# | 7.71 | 2024 | |
| 12 | Matt Grimes | 7.50 | 2018 | |
| 13 | Dan Straily | 7.32 | 2021 | |
| 14 | Logan Darnell | 6.75 | 2014 | |
| 15 | Tejay Antone# | 6.62 | 2019 | |
| 16 | Zachary Nuding | 6.27 | 2013 | |
| 17 | Dakota Hudson# | 6.19 | 2021 | |
| 18 | Sammy Solis | 6.16 | 2015 | |
| 19 | Drew Rucinski# | 6.05 | 2024 | |
| 20 | Kyle McPherson | 5.94 | 2016 | |
| 21 | Blade Tidwell# | 5.50 | 2024 | |
| 22 | Dario Agrazal# | 5.40 | 2021 | |
| 23 | Tanner Gordon# | 4.50 | 2023 | |
| 24 | Ryan Carpenter# | 4.08 | 2021 |
