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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | WHIP | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Matthew Wisler | 1.16 | 2017-2020 | |
| 2 | Zach McAllister | 1.19 | 2017-2020 | |
| 3 | Craig Missigman# | 1.21 | 2018-2021 | |
| 4 | Fred Watts# | 1.22 | 2019-2022 | |
| 5 | Jason Adam | 1.23 | 2017-2020 | |
| 6 | Junichi Tazawa | 1.25 | 2013-2017 | |
| 7 | Sean O'Sullivan | 1.27 | 2012-2018 | |
| 8 | Arturo Maltos-Garcia# | 1.28 | 2017-2022 | |
| 9 | Randall Peña# | 1.29 | 2018-2022 | |
| 9 | Justin Grimm | 1.29 | 2012-2020 | |
| 9 | Michael Fiers | 1.29 | 2012-2018 | |
| 12 | Kyle McPherson | 1.30 | 2013-2021 | |
| 13 | Hayden Pierce# | 1.32 | 2019-2023 | |
| 13 | Jose Cisnero | 1.32 | 2013-2020 | |
| 13 | José Ramos# | 1.32 | 2018-2023 | |
| 16 | Kevin Gausman# | 1.33 | 2015-2022 | |
| 16 | Kurt Wunderlich | 1.33 | 2014-2018 | |
| 18 | Victor Sanchez# | 1.34 | 2016-2024 | |
| 18 | Christian Friedrich# | 1.34 | 2012-2022 | |
| 18 | Erasmo Ramirez | 1.34 | 2013-2015 | |
| 21 | Chad Bettis | 1.35 | 2015-2022 | |
| 21 | Enny Romero | 1.35 | 2013-2018 | |
| 23 | Jesse Darrah | 1.36 | 2015-2021 | |
| 23 | John Stilson | 1.36 | 2015-2021 | |
| 25 | Michael Ynoa# | 1.37 | 2018-2022 | |
| 25 | Chad James# | 1.37 | 2012-2022 | |
| 25 | Duane Below | 1.37 | 2014-2018 | |
| 25 | Dae-Eun Rhee | 1.37 | 2012-2018 | |
| 29 | Taylor Jungmann | 1.38 | 2014-2020 | |
| 30 | Tyrell Jenkins# | 1.39 | 2015-2023 | |
| 30 | Jeriome Hill# | 1.39 | 2019-2023 | |
| 30 | Clayton Blackburn | 1.39 | 2016-2020 | |
| 30 | James Russell | 1.39 | 2012-2016 | |
| 34 | Bryce Bandilla | 1.40 | 2013-2022 | |
| 34 | David Cortéz# | 1.40 | 2019-2022 | |
| 36 | Miguel De Los Santos | 1.41 | 2014-2022 | |
| 36 | Brandon Martinez# | 1.41 | 2014-2022 | |
| 38 | Will Smith | 1.42 | 2012-2023 | |
| 38 | Joel Carreno | 1.42 | 2012-2017 | |
| 38 | Blake Hassebrock | 1.42 | 2014-2021 | |
| 38 | Chad Jenkins | 1.42 | 2012-2022 | |
| 38 | Eduardo Fernández# | 1.42 | 2019-2024 | |
| 38 | Blake Wood | 1.42 | 2012-2020 | |
| 44 | Alex Lange# | 1.43 | 2020-2023 | |
| 44 | Joshua Hodges# | 1.43 | 2014-2018 | |
| 46 | António Cruz# | 1.44 | 2015-2023 | |
| 46 | David Phelps | 1.44 | 2013-2017 | |
| 46 | Joe Biagini# | 1.44 | 2014-2018 | |
| 46 | Garrett Richards | 1.44 | 2012-2020 | |
| 50 | Zach Rivera# | 1.45 | 2017-2022 | |
| 51 | Bud Norris | 1.46 | 2012-2019 | |
| 52 | Drew Taylor | 1.47 | 2012-2020 | |
| 52 | Gustavo Gomez | 1.47 | 2015-2021 | |
| 54 | Adrián Castillo# | 1.48 | 2018-2023 | |
| 54 | Miguel Gonzalez | 1.48 | 2013-2018 | |
| 54 | Charlie Furbush | 1.48 | 2012-2017 | |
| 54 | Ed Petty# | 1.48 | 2020-2023 | |
| 58 | Raul Alcantara | 1.49 | 2014-2021 | |
| 59 | Nathan Karns | 1.50 | 2014-2019 | |
| 60 | Tyler Matzek | 1.52 | 2018-2022 | |
| 61 | John Hellweg | 1.53 | 2013-2022 | |
| 62 | Neil Ramirez | 1.54 | 2012-2017 | |
| 63 | Daniel Winkler# | 1.55 | 2014-2024 | |
| 63 | Kevin Couture | 1.55 | 2014-2018 | |
| 65 | Alex White | 1.56 | 2012-2017 | |
| 65 | Tyler Anderson# | 1.56 | 2013-2020 | |
| 67 | Matt Purke | 1.61 | 2014-2019 |
