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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | H9 | YEAR | Open Postseason Career Leaderboard |
|---|---|---|---|---|
| 1 | Corbin Martin# | 5.82 | 2019 | |
| 2 | Kwang-hyun Kim# | 5.96 | 2025 | |
| 3 | Brett Cecil | 6.18 | 2013 | |
| 4 | Luke Weaver# | 6.95 | 2021 | |
| 5 | Randall Delgado | 6.98 | 2013 | |
| 6 | Manny Banuelos# | 7.29 | 2014 | |
| 7 | Tobias Myers# | 7.50 | 2024 | |
| 8 | Tyler Alexander# | 7.52 | 2024 | |
| 9 | Maximo Castillo# | 7.71 | 2023 | |
| 9 | David Peterson# | 7.71 | 2020 | |
| 11 | Paolo Espino# | 7.78 | 2017 | |
| 11 | Rubby de la Rosa# | 7.78 | 2014 | |
| 13 | Collin Wiles# | 8.24 | 2023 | |
| 13 | Osvaldo Bido# | 8.24 | 2024 | |
| 15 | Gabriel Ynoa | 8.54 | 2017 | |
| 16 | Jordan Lyles# | 8.66 | 2017 | |
| 17 | Mike Vinson | 8.80 | 2016 | |
| 18 | John Gast | 9.00 | 2017 | |
| 19 | Brian Flynn | 9.33 | 2014 | |
| 20 | Brent Honeywell Jr.# | 9.50 | 2019 | |
| 20 | Emerson Hancock# | 9.50 | 2023 | |
| 22 | Jack Patterson | 9.53 | 2020 | |
| 23 | Jose Alvarez | 9.78 | 2014 | |
| 24 | Brooks Raley# | 10.12 | 2016 | |
| 25 | Alex Cobb# | 10.17 | 2013 | |
| 26 | Trevor Rogers# | 10.80 | 2025 | |
| 27 | Brian Matusz | 11.00 | 2013 | |
| 28 | Cody Morris# | 11.02 | 2023 | |
| 29 | Austen Williams | 11.17 | 2020 | |
| 30 | Jack Flaherty# | 11.25 | 2018 | |
| 31 | Jakob Junis# | 11.57 | 2024 | |
| 31 | Jesse Biddle | 11.57 | 2015 | |
| 33 | Nick Travieso | 12.00 | 2016 | |
| 34 | Nicholas Kingham | 13.50 | 2015 | |
| 35 | T.J. House | 13.73 | 2017 | |
| 36 | Brady Rodgers | 13.76 | 2017 | |
| 37 | Nathan Eovaldi# | 14.68 | 2013 | |
| 38 | Jarred Cosart | 14.77 | 2013 |
