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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 | Rodrigo Lemus# | 0.93 | 2013-2021 | |
| 3 | Joe Hart# | 0.98 | 2013-2021 | |
| 4 | Jose Rodriguez | 0.99 | 2000-2016 | |
| 5 | Felipe Ayala# | 1.02 | 2013-2021 | |
| 5 | Tom Franzoni* | 1.02 | 2000-2015 | |
| 7 | Hethum Manasarian# | 1.03 | 2001-2020 | |
| 8 | Carlos Mendez# | 1.05 | 2011-2021 | |
| 9 | Heriberto Milan# | 1.06 | 2007-2021 | |
| 9 | Carlos Garcia | 1.06 | 2000-2014 | |
| 9 | Jordan Clarke# | 1.06 | 2004-2020 | |
| 9 | Nelson Cirilo | 1.06 | 2007-2014 | |
| 9 | Du-sung Moon | 1.06 | 2002-2015 | |
| 14 | Barry McLamb# | 1.07 | 2013-2021 | |
| 15 | Matt Schmid# | 1.08 | 2013-2020 | |
| 15 | Ryan DeVault | 1.08 | 2007-2015 | |
| 15 | Corbett Wright# | 1.08 | 2010-2021 | |
| 18 | Eric Burdine | 1.09 | 2000-2017 | |
| 18 | Ray Rorie# | 1.09 | 2016-2021 | |
| 18 | Chris Frost# | 1.09 | 2011-2020 | |
| 21 | Johnny Keener# | 1.10 | 2015-2021 | |
| 21 | Travis Thurber# | 1.10 | 2005-2021 | |
| 21 | J.R. Mitchell# | 1.10 | 2013-2021 | |
| 24 | Felipe Gonzalez# | 1.11 | 2011-2020 | |
| 25 | Travis Salopek# | 1.12 | 2014-2021 | |
| 25 | Logan Stone# | 1.12 | 2010-2020 | |
| 25 | Joe Hewson# | 1.12 | 2014-2020 | |
| 28 | Mike Nave | 1.13 | 2009-2017 | |
| 28 | John Froerer# | 1.13 | 2015-2021 | |
| 28 | Jay Helm# | 1.13 | 2015-2021 | |
| 28 | Victor Herrera# | 1.13 | 2011-2018 | |
| 32 | Vance Adams | 1.14 | 2000-2013 | |
| 32 | Olímpio Forjaz | 1.14 | 2000-2006 | |
| 32 | Sean Bartol | 1.14 | 2000-2010 | |
| 32 | Zachary Christman# | 1.14 | 2014-2021 | |
| 32 | Rodolfo Soto# | 1.14 | 2015-2021 | |
| 37 | Ben O'Halloran# | 1.15 | 2016-2021 | |
| 37 | Chad Stokes | 1.15 | 2006-2017 | |
| 37 | Antonio Higuera# | 1.15 | 2007-2021 | |
| 37 | David Nations | 1.15 | 2000-2008 | |
| 37 | Pat Hovhannisian# | 1.15 | 2014-2021 | |
| 37 | Geremia Farinelli | 1.15 | 2000-2014 | |
| 37 | Bill Vasquez | 1.15 | 2000-2012 | |
| 37 | Alfredo Tiscareno# | 1.15 | 2010-2021 | |
| 45 | Brett Dorman | 1.16 | 2005-2019 | |
| 45 | Jose Moreno | 1.16 | 2000-2014 | |
| 45 | Jose Alvarado | 1.16 | 2006-2016 | |
| 45 | Mike Bing | 1.16 | 2000-2011 | |
| 49 | Phil Gregoire# | 1.17 | 2013-2021 | |
| 49 | Josh Flaten# | 1.17 | 2015-2021 | |
| 49 | Jeff Rochefort# | 1.17 | 2009-2019 | |
| 49 | Corey Gruver# | 1.17 | 2006-2021 | |
| 49 | Andres Moran# | 1.17 | 2011-2020 | |
| 49 | Ron Baumgardner | 1.17 | 2010-2019 | |
| 49 | Jorge Valdez | 1.17 | 2006-2018 | |
| 49 | Greg Sandlin# | 1.17 | 2009-2021 | |
| 49 | Emmanuel Mendoza# | 1.17 | 2008-2021 | |
| 49 | Chad Landreth | 1.17 | 2001-2017 | |
| 49 | Bill Flowers# | 1.17 | 2011-2021 | |
| 60 | Iliana Preciado | 1.18 | 2000-2009 | |
| 60 | Xiang-ling Fei* | 1.18 | 2000-2012 | |
| 60 | Shawn McMurtry# | 1.18 | 2013-2020 | |
| 60 | Albert Fabian# | 1.18 | 2014-2021 | |
| 60 | Tim Villeneuve | 1.18 | 2004-2017 | |
| 60 | Juan Mendoza# | 1.18 | 2014-2021 | |
| 66 | Chris Mattison# | 1.19 | 2012-2019 | |
| 66 | Bobby Moreno | 1.19 | 2005-2014 | |
| 66 | Andy Shoemaker# | 1.19 | 2012-2021 | |
| 66 | Jimmy Davis | 1.19 | 2000-2013 | |
| 66 | Aaron Sutton# | 1.19 | 2009-2021 | |
| 71 | William Arredondo | 1.20 | 2000-2012 | |
| 71 | Jason Strobel# | 1.20 | 2014-2020 | |
| 71 | Khalil Marshall | 1.20 | 2000-2009 | |
| 71 | Adrian Radecki# | 1.20 | 2012-2019 | |
| 75 | Oscar Malave# | 1.21 | 2012-2020 | |
| 75 | Juan Lanzas# | 1.21 | 2010-2020 | |
| 75 | Brian Prince# | 1.21 | 2011-2020 | |
| 75 | Miles Hale | 1.21 | 2000-2011 | |
| 75 | Justin Turbeville | 1.21 | 2008-2018 | |
| 75 | Sergio Martinez | 1.21 | 2005-2017 | |
| 75 | Adrian Huffine# | 1.21 | 2015-2021 | |
| 75 | Hiromi Fukuda | 1.21 | 2006-2018 | |
| 75 | Kory Tourville# | 1.21 | 2014-2021 | |
| 75 | Fernando Hernandez# | 1.21 | 2006-2020 | |
| 85 | Chris Stein | 1.22 | 2004-2013 | |
| 85 | Bill Rauch# | 1.22 | 2011-2020 | |
| 85 | Joel Vens# | 1.22 | 2009-2017 | |
| 85 | Jeremy Hewes# | 1.22 | 2010-2021 | |
| 85 | Daishin Uchida | 1.22 | 2008-2016 | |
| 85 | William Vega | 1.22 | 2013-2018 | |
| 85 | Rogelio Aburto# | 1.22 | 2009-2020 | |
| 85 | Eddie De Leeuw# | 1.22 | 2011-2021 | |
| 93 | Elard Nijhuis | 1.23 | 2000-2009 | |
| 93 | Jonathan Luna | 1.23 | 2000-2011 | |
| 93 | Roger Hamel | 1.23 | 2000-2014 | |
| 93 | Casey Abbott# | 1.23 | 2009-2021 | |
| 93 | Chris Kuperman | 1.23 | 2002-2012 | |
| 93 | Chris Harris# | 1.23 | 2007-2020 | |
| 93 | Pat Payne# | 1.23 | 2009-2020 | |
| 100 | Dillon Moyer | 1.24 | 2002-2014 |
