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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | WHIP | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Sean Cofield | 1.05 | 2011-2021 | |
| 2 | Jonathan Parker | 1.07 | 2011-2022 | |
| 3 | Cameron Outlaw# | 1.09 | 2015-2024 | |
| 4 | Chris Marquis# | 1.11 | 2018-2024 | |
| 5 | Tom Rise# | 1.12 | 2015-2024 | |
| 6 | Andy Jackson | 1.13 | 2005-2013 | |
| 6 | Nick Kline | 1.13 | 2007-2023 | |
| 6 | Chris Pickens | 1.13 | 2005-2013 | |
| 9 | Brian Gann | 1.14 | 2000-2013 | |
| 9 | Federico Gonzalez | 1.14 | 2000-2009 | |
| 11 | Rick Winkler# | 1.16 | 2017-2024 | |
| 11 | Enrique Perez | 1.16 | 2009-2017 | |
| 13 | Gerardo Lozano | 1.17 | 2014-2021 | |
| 13 | Nate Briceno# | 1.17 | 2014-2024 | |
| 15 | Matt Beard | 1.18 | 2000-2013 | |
| 15 | Nelson Martinez# | 1.18 | 2011-2023 | |
| 17 | Jon Caruso | 1.19 | 2004-2013 | |
| 18 | Jim Patrick | 1.20 | 2000-2011 | |
| 18 | Mauricio Martinez# | 1.20 | 2015-2024 | |
| 20 | Santiago Rodas | 1.21 | 2000-2010 | |
| 20 | Adam Arnett | 1.21 | 2000-2009 | |
| 22 | Josh Bass# | 1.22 | 2014-2024 | |
| 22 | Luis Alcoser | 1.22 | 2005-2022 | |
| 22 | Justin Steach | 1.22 | 2004-2014 | |
| 25 | Cameron Brown | 1.23 | 2011-2018 | |
| 25 | Justin Messer | 1.23 | 2000-2012 | |
| 25 | Jeremy Excell | 1.23 | 2000-2012 | |
| 28 | Aaron Harrison | 1.24 | 2000-2010 | |
| 29 | Jesus Quintero | 1.25 | 2000-2009 | |
| 29 | Fred Muse | 1.25 | 2000-2012 | |
| 29 | Brad Goodman | 1.25 | 2012-2021 | |
| 32 | Don Sheffield | 1.26 | 2000-2011 | |
| 32 | Gabe Vincent# | 1.26 | 2012-2023 | |
| 32 | Brian Yates | 1.26 | 2003-2012 | |
| 32 | Josh Adams | 1.26 | 2000-2014 | |
| 32 | Chris Auger | 1.26 | 2000-2009 | |
| 37 | Terry Droubay# | 1.27 | 2017-2024 | |
| 37 | Jose Estrada | 1.27 | 2000-2010 | |
| 37 | Mike Felder | 1.27 | 2004-2014 | |
| 40 | Logan Johns | 1.28 | 2002-2011 | |
| 40 | Jonathan Lung | 1.28 | 2000-2011 | |
| 40 | Dan Hagen | 1.28 | 2002-2013 | |
| 40 | Nick Giese | 1.28 | 2000-2009 | |
| 44 | Ian Starcher | 1.29 | 2000-2012 | |
| 44 | Markus Mensink | 1.29 | 2000-2008 | |
| 44 | Will Moore | 1.29 | 2000-2009 | |
| 47 | Jonathan McMahon | 1.30 | 2001-2009 | |
| 47 | Morgan Thompson | 1.30 | 2005-2014 | |
| 49 | Tadanori Kawasaki | 1.31 | 2005-2014 | |
| 49 | Andy McCullough | 1.31 | 2000-2014 | |
| 51 | Sean Prevost | 1.32 | 2005-2014 | |
| 51 | Bruce Hernandez | 1.32 | 2000-2008 | |
| 53 | Matt McPeak | 1.33 | 2000-2006 | |
| 53 | Arturo Jimenez | 1.33 | 2003-2013 | |
| 53 | Ramon Sandoval | 1.33 | 2000-2009 | |
| 56 | Brad Parish | 1.34 | 2000-2008 | |
| 56 | Edgar Gonzalez | 1.34 | 2000-2009 | |
| 56 | Ryan Hester | 1.34 | 2001-2011 | |
| 59 | Tyler Byrd | 1.35 | 2000-2011 | |
| 60 | Matt Taub | 1.36 | 2005-2016 | |
| 61 | Alan Sweet | 1.39 | 2000-2009 | |
| 62 | C.J. Mejia | 1.40 | 2011-2019 | |
| 63 | Brian Zubia | 1.42 | 2008-2015 | |
| 64 | Dave Vilca | 1.43 | 2000-2007 | |
| 65 | Mike Henken | 1.44 | 2001-2011 | |
| 66 | Tom Schauman | 1.48 | 2003-2010 |
