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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | K9 | YEAR | Open Postseason Career Leaderboard |
|---|---|---|---|---|
| 1 | Rubby de la Rosa# | 9.15 | 2014 | |
| 2 | Luke Weaver# | 9.00 | 2021 | |
| 3 | Jakob Junis# | 8.68 | 2024 | |
| 4 | Tobias Myers# | 8.50 | 2024 | |
| 5 | Brett Cecil | 8.46 | 2013 | |
| 6 | Maximo Castillo# | 8.20 | 2023 | |
| 7 | Manny Banuelos# | 8.14 | 2014 | |
| 8 | T.J. House | 7.78 | 2017 | |
| 9 | Brian Flynn | 7.36 | 2014 | |
| 10 | Jesse Biddle | 7.16 | 2015 | |
| 10 | David Peterson# | 7.16 | 2020 | |
| 12 | Austen Williams | 6.98 | 2020 | |
| 13 | Tyler Alexander# | 6.64 | 2024 | |
| 14 | Nathan Eovaldi# | 6.63 | 2013 | |
| 15 | Corbin Martin# | 6.35 | 2019 | |
| 15 | Jack Patterson | 6.35 | 2020 | |
| 17 | Jack Flaherty# | 6.19 | 2018 | |
| 18 | Cody Morris# | 6.06 | 2023 | |
| 19 | Jose Alvarez | 6.05 | 2014 | |
| 20 | Emerson Hancock# | 6.00 | 2023 | |
| 21 | Nicholas Kingham | 5.94 | 2015 | |
| 22 | Mike Vinson | 5.87 | 2016 | |
| 23 | Jordan Lyles# | 5.60 | 2017 | |
| 24 | Brian Matusz | 5.50 | 2013 | |
| 25 | Alex Cobb# | 5.48 | 2013 | |
| 26 | Paolo Espino# | 5.03 | 2017 | |
| 26 | Osvaldo Bido# | 5.03 | 2024 | |
| 28 | Brady Rodgers | 4.76 | 2017 | |
| 29 | Randall Delgado | 4.19 | 2013 | |
| 30 | Collin Wiles# | 4.12 | 2023 | |
| 31 | Jarred Cosart | 4.08 | 2013 | |
| 32 | John Gast | 3.71 | 2017 | |
| 33 | Nick Travieso | 3.50 | 2016 | |
| 34 | Brent Honeywell Jr.# | 3.00 | 2019 | |
| 35 | Gabriel Ynoa | 2.73 | 2017 | |
| 36 | Brooks Raley# | 2.41 | 2016 |
