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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# | 0.97 | 2013-2026 | |
| 3 | Jose Rodriguez* | 0.99 | 2000-2016 | |
| 4 | Rodrigo Lemus# | 1.00 | 2013-2026 | |
| 5 | Justin Jemison# | 1.01 | 2019-2026 | |
| 5 | Cameron Hutchinson# | 1.01 | 2015-2026 | |
| 7 | Tom Franzoni* | 1.02 | 2000-2015 | |
| 8 | Hethum Manasarian | 1.03 | 2001-2020 | |
| 9 | Heriberto Milan | 1.06 | 2007-2022 | |
| 9 | Carlos Garcia | 1.06 | 2000-2014 | |
| 9 | Nelson Cirilo | 1.06 | 2007-2014 | |
| 9 | Du-sung Moon | 1.06 | 2002-2015 | |
| 13 | Jordan Clarke | 1.08 | 2004-2023 | |
| 13 | Ryan DeVault | 1.08 | 2007-2015 | |
| 13 | Adam D'Alberto# | 1.08 | 2016-2026 | |
| 13 | Matt Graham# | 1.08 | 2020-2026 | |
| 17 | Eric Burdine* | 1.09 | 2000-2017 | |
| 17 | Felipe Ayala# | 1.09 | 2013-2026 | |
| 17 | Ryan Flamino# | 1.09 | 2020-2026 | |
| 17 | Sam Campos# | 1.09 | 2020-2026 | |
| 21 | Travis Thurber# | 1.10 | 2005-2026 | |
| 22 | Felipe Gonzalez | 1.11 | 2011-2020 | |
| 22 | Barry McLamb# | 1.11 | 2013-2023 | |
| 24 | Carlos Mendez# | 1.12 | 2011-2025 | |
| 24 | Joe Hewson | 1.12 | 2014-2021 | |
| 24 | Dan Miller# | 1.12 | 2018-2026 | |
| 24 | Chris Frost | 1.12 | 2011-2022 | |
| 28 | Mike Nave | 1.13 | 2009-2017 | |
| 28 | Travis Salopek | 1.13 | 2014-2022 | |
| 28 | Victor Herrera | 1.13 | 2011-2018 | |
| 31 | Vance Adams | 1.14 | 2000-2013 | |
| 31 | Olímpio Forjaz | 1.14 | 2000-2006 | |
| 31 | Sean Bartol | 1.14 | 2000-2010 | |
| 31 | Logan Stone | 1.14 | 2010-2022 | |
| 35 | Chad Stokes | 1.15 | 2006-2017 | |
| 35 | David Nations | 1.15 | 2000-2008 | |
| 35 | Jeff Buck# | 1.15 | 2015-2026 | |
| 35 | Geremia Farinelli | 1.15 | 2000-2014 | |
| 35 | Bill Vasquez | 1.15 | 2000-2012 | |
| 40 | Luke Scrimger# | 1.16 | 2019-2026 | |
| 40 | Brett Dorman | 1.16 | 2005-2019 | |
| 40 | Jose Moreno | 1.16 | 2000-2014 | |
| 40 | Jose Alvarado | 1.16 | 2006-2016 | |
| 40 | Mike Bing | 1.16 | 2000-2011 | |
| 40 | Andy Weatherholt# | 1.16 | 2021-2026 | |
| 46 | John Way# | 1.17 | 2016-2025 | |
| 46 | Jeff Rochefort | 1.17 | 2009-2019 | |
| 46 | Ray Rorie# | 1.17 | 2016-2026 | |
| 46 | Ron Baumgardner | 1.17 | 2010-2019 | |
| 46 | Ray Dappen# | 1.17 | 2021-2026 | |
| 46 | Matt Schmid# | 1.17 | 2013-2023 | |
| 46 | Jorge Valdez | 1.17 | 2006-2018 | |
| 46 | Xavier Cooper# | 1.17 | 2014-2025 | |
| 46 | Chad Landreth | 1.17 | 2001-2017 | |
| 46 | Juan Mendoza# | 1.17 | 2014-2025 | |
| 56 | Iliana Preciado | 1.18 | 2000-2009 | |
| 56 | Xiang-ling Fei* | 1.18 | 2000-2012 | |
| 56 | Corbett Wright | 1.18 | 2010-2024 | |
| 56 | Shawn McMurtry | 1.18 | 2013-2022 | |
| 60 | Chris Mattison | 1.19 | 2012-2019 | |
| 60 | Zachary Christman# | 1.19 | 2014-2025 | |
| 60 | Greg Sandlin | 1.19 | 2009-2024 | |
| 60 | Corey Gruver# | 1.19 | 2006-2026 | |
| 60 | Bobby Moreno | 1.19 | 2005-2014 | |
| 60 | Jayden Nesmith | 1.19 | 2012-2023 | |
| 60 | Johnny Keener# | 1.19 | 2015-2025 | |
| 67 | John Froerer# | 1.20 | 2015-2026 | |
| 67 | Miguel Leon# | 1.20 | 2017-2026 | |
| 67 | Aaron Sutton | 1.20 | 2009-2021 | |
| 67 | Emmanuel Mendoza | 1.20 | 2008-2023 | |
| 67 | Alfredo Tiscareno# | 1.20 | 2010-2026 | |
| 67 | William Arredondo | 1.20 | 2000-2012 | |
| 67 | Jack Ivory# | 1.20 | 2018-2026 | |
| 67 | Antonio Higuera# | 1.20 | 2007-2026 | |
| 67 | Khalil Marshall | 1.20 | 2000-2009 | |
| 67 | Adrian Radecki | 1.20 | 2012-2019 | |
| 67 | Bill Rauch | 1.20 | 2011-2023 | |
| 78 | Juan Lanzas | 1.21 | 2010-2020 | |
| 78 | Danny Offen# | 1.21 | 2020-2026 | |
| 78 | J.R. Mitchell# | 1.21 | 2013-2026 | |
| 78 | Miles Hale | 1.21 | 2000-2011 | |
| 78 | Jonathan Allen# | 1.21 | 2016-2026 | |
| 78 | Justin Turbeville | 1.21 | 2008-2018 | |
| 78 | Josh Reed# | 1.21 | 2016-2025 | |
| 78 | Hiromi Fukuda | 1.21 | 2006-2018 | |
| 86 | Chris Stein | 1.22 | 2004-2013 | |
| 86 | Jeremy Hewes | 1.22 | 2010-2022 | |
| 86 | Andres Moran | 1.22 | 2011-2022 | |
| 86 | Joel Vens | 1.22 | 2009-2017 | |
| 86 | Andy Shoemaker# | 1.22 | 2012-2023 | |
| 86 | Daishin Uchida | 1.22 | 2008-2016 | |
| 86 | William Vega | 1.22 | 2013-2018 | |
| 86 | Brian Prince | 1.22 | 2011-2024 | |
| 86 | Rogelio Aburto | 1.22 | 2009-2020 | |
| 95 | Elard Nijhuis | 1.23 | 2000-2009 | |
| 95 | Jonathan Luna | 1.23 | 2000-2011 | |
| 95 | Roger Hamel | 1.23 | 2000-2014 | |
| 95 | Fernando Hernandez | 1.23 | 2006-2024 | |
| 95 | Casey Abbott# | 1.23 | 2009-2025 | |
| 95 | Jay Helm# | 1.23 | 2015-2026 |
