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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | WHIP | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Paul Ledford* | 0.90 | 2000-2013 | |
| 2 | Joe Hart# | 0.96 | 2013-2024 | |
| 3 | Jose Rodriguez* | 0.99 | 2000-2016 | |
| 4 | Justin Jemison# | 1.00 | 2019-2025 | |
| 4 | Rodrigo Lemus# | 1.00 | 2013-2025 | |
| 6 | Tom Franzoni* | 1.02 | 2000-2015 | |
| 7 | Hethum Manasarian | 1.03 | 2001-2020 | |
| 8 | Heriberto Milan | 1.06 | 2007-2022 | |
| 8 | Carlos Garcia | 1.06 | 2000-2014 | |
| 8 | Nelson Cirilo | 1.06 | 2007-2014 | |
| 8 | Du-sung Moon | 1.06 | 2002-2015 | |
| 12 | Jordan Clarke | 1.08 | 2004-2023 | |
| 12 | Ryan DeVault | 1.08 | 2007-2015 | |
| 12 | Felipe Ayala# | 1.08 | 2013-2025 | |
| 15 | Eric Burdine* | 1.09 | 2000-2017 | |
| 16 | Travis Thurber# | 1.10 | 2005-2024 | |
| 17 | Carlos Mendez# | 1.11 | 2011-2025 | |
| 17 | Dan Miller# | 1.11 | 2018-2025 | |
| 17 | Felipe Gonzalez | 1.11 | 2011-2020 | |
| 17 | Barry McLamb# | 1.11 | 2013-2023 | |
| 21 | Joe Hewson | 1.12 | 2014-2021 | |
| 21 | Chris Frost | 1.12 | 2011-2022 | |
| 23 | Mike Nave | 1.13 | 2009-2017 | |
| 23 | Travis Salopek | 1.13 | 2014-2022 | |
| 23 | Victor Herrera | 1.13 | 2011-2018 | |
| 26 | Vance Adams | 1.14 | 2000-2013 | |
| 26 | Olímpio Forjaz | 1.14 | 2000-2006 | |
| 26 | Sean Bartol | 1.14 | 2000-2010 | |
| 26 | Logan Stone | 1.14 | 2010-2022 | |
| 30 | Chad Stokes | 1.15 | 2006-2017 | |
| 30 | David Nations | 1.15 | 2000-2008 | |
| 30 | Geremia Farinelli | 1.15 | 2000-2014 | |
| 30 | Bill Vasquez | 1.15 | 2000-2012 | |
| 34 | Brett Dorman | 1.16 | 2005-2019 | |
| 34 | Luke Scrimger# | 1.16 | 2019-2025 | |
| 34 | Jose Moreno | 1.16 | 2000-2014 | |
| 34 | Jose Alvarado | 1.16 | 2006-2016 | |
| 34 | John Froerer# | 1.16 | 2015-2025 | |
| 34 | Mike Bing | 1.16 | 2000-2011 | |
| 34 | John Way# | 1.16 | 2016-2025 | |
| 41 | Jeff Rochefort | 1.17 | 2009-2019 | |
| 41 | Ron Baumgardner | 1.17 | 2010-2019 | |
| 41 | Matt Schmid# | 1.17 | 2013-2023 | |
| 41 | Jorge Valdez | 1.17 | 2006-2018 | |
| 41 | Xavier Cooper# | 1.17 | 2014-2025 | |
| 41 | Chad Landreth | 1.17 | 2001-2017 | |
| 41 | Juan Mendoza# | 1.17 | 2014-2021 | |
| 48 | Iliana Preciado | 1.18 | 2000-2009 | |
| 48 | Xiang-ling Fei* | 1.18 | 2000-2012 | |
| 48 | Miguel Leon# | 1.18 | 2017-2025 | |
| 48 | Corbett Wright# | 1.18 | 2010-2024 | |
| 48 | Johnny Keener# | 1.18 | 2015-2025 | |
| 48 | Alfredo Tiscareno# | 1.18 | 2010-2025 | |
| 48 | Corey Gruver# | 1.18 | 2006-2025 | |
| 48 | Shawn McMurtry | 1.18 | 2013-2022 | |
| 48 | Ray Rorie# | 1.18 | 2016-2025 | |
| 48 | Jay Helm# | 1.18 | 2015-2025 | |
| 58 | Chris Mattison | 1.19 | 2012-2019 | |
| 58 | Zachary Christman# | 1.19 | 2014-2025 | |
| 58 | Greg Sandlin# | 1.19 | 2009-2024 | |
| 58 | Bobby Moreno | 1.19 | 2005-2014 | |
| 58 | Antonio Higuera# | 1.19 | 2007-2025 | |
| 58 | Jayden Nesmith# | 1.19 | 2012-2023 | |
| 58 | Phil Gregoire# | 1.19 | 2013-2025 | |
| 65 | J.R. Mitchell# | 1.20 | 2013-2025 | |
| 65 | Aaron Sutton | 1.20 | 2009-2021 | |
| 65 | Emmanuel Mendoza | 1.20 | 2008-2023 | |
| 65 | Jack Ivory# | 1.20 | 2018-2025 | |
| 65 | William Arredondo | 1.20 | 2000-2012 | |
| 65 | Khalil Marshall | 1.20 | 2000-2009 | |
| 65 | Adrian Radecki | 1.20 | 2012-2019 | |
| 65 | Bill Rauch | 1.20 | 2011-2023 | |
| 73 | Juan Lanzas | 1.21 | 2010-2020 | |
| 73 | Miles Hale | 1.21 | 2000-2011 | |
| 73 | Justin Turbeville | 1.21 | 2008-2018 | |
| 73 | Jonathan Allen# | 1.21 | 2016-2025 | |
| 73 | Hiromi Fukuda | 1.21 | 2006-2018 | |
| 73 | Josh Reed# | 1.21 | 2016-2025 | |
| 73 | Joe Schroeder# | 1.21 | 2017-2025 | |
| 80 | Chris Stein | 1.22 | 2004-2013 | |
| 80 | Rodolfo Soto# | 1.22 | 2015-2025 | |
| 80 | Jeremy Hewes | 1.22 | 2010-2022 | |
| 80 | Andres Moran | 1.22 | 2011-2022 | |
| 80 | Joel Vens | 1.22 | 2009-2017 | |
| 80 | Andy Shoemaker# | 1.22 | 2012-2023 | |
| 80 | Daishin Uchida | 1.22 | 2008-2016 | |
| 80 | William Vega | 1.22 | 2013-2018 | |
| 80 | Brian Prince# | 1.22 | 2011-2024 | |
| 80 | Rogelio Aburto | 1.22 | 2009-2020 | |
| 90 | Pat Hovhannisian# | 1.23 | 2014-2025 | |
| 90 | Josh Flaten# | 1.23 | 2015-2025 | |
| 90 | Elard Nijhuis | 1.23 | 2000-2009 | |
| 90 | Jonathan Luna | 1.23 | 2000-2011 | |
| 90 | Roger Hamel | 1.23 | 2000-2014 | |
| 90 | Fernando Hernandez | 1.23 | 2006-2024 | |
| 90 | Casey Abbott# | 1.23 | 2009-2025 | |
| 90 | Chris Kuperman | 1.23 | 2002-2012 | |
| 90 | Chris Harris | 1.23 | 2007-2020 | |
| 90 | Sergio Penichet# | 1.23 | 2013-2025 | |
| 100 | Bill Flowers# | 1.24 | 2011-2025 |
