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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | WHIP | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Doug Yost# | 1.03 | 2007-2020 | |
| 2 | Sean Cofield# | 1.04 | 2011-2020 | |
| 3 | Jonathan Parker# | 1.07 | 2011-2020 | |
| 4 | Cameron Outlaw# | 1.08 | 2015-2020 | |
| 5 | Victor Trevino# | 1.11 | 2015-2019 | |
| 6 | Andy Jackson | 1.13 | 2005-2013 | |
| 6 | Chris Pickens | 1.13 | 2005-2013 | |
| 6 | Gerardo Lozano# | 1.13 | 2014-2020 | |
| 9 | Brian Gann | 1.14 | 2000-2013 | |
| 9 | Matt Garcia | 1.14 | 2004-2013 | |
| 9 | Federico Gonzalez | 1.14 | 2000-2009 | |
| 12 | Enrique Perez# | 1.16 | 2009-2017 | |
| 13 | Nelson Martinez# | 1.17 | 2011-2020 | |
| 13 | Alex Padial | 1.17 | 2005-2018 | |
| 15 | Ian Harned | 1.18 | 2000-2010 | |
| 15 | Matt Beard | 1.18 | 2000-2013 | |
| 17 | Jon Caruso | 1.19 | 2004-2013 | |
| 18 | Jim Patrick | 1.20 | 2000-2011 | |
| 18 | Dustin Robinson# | 1.20 | 2015-2020 | |
| 18 | Dan Cormie | 1.20 | 2008-2017 | |
| 21 | Santiago Rodas | 1.21 | 2000-2010 | |
| 21 | Bill Kilmer | 1.21 | 2000-2006 | |
| 21 | Adam Arnett | 1.21 | 2000-2009 | |
| 24 | Justin Steach | 1.22 | 2004-2014 | |
| 24 | Jorge Lopez | 1.22 | 2000-2013 | |
| 26 | Cameron Brown | 1.23 | 2011-2018 | |
| 26 | Justin Messer | 1.23 | 2000-2012 | |
| 26 | Jeremy Excell | 1.23 | 2000-2012 | |
| 29 | Aaron Harrison | 1.24 | 2000-2010 | |
| 29 | Luis Alcoser# | 1.24 | 2005-2020 | |
| 29 | Danny Lopez | 1.24 | 2000-2011 | |
| 29 | Gabe Vincent# | 1.24 | 2012-2020 | |
| 33 | Jesus Quintero | 1.25 | 2000-2009 | |
| 33 | Fred Muse | 1.25 | 2000-2012 | |
| 33 | Mauricio Martinez# | 1.25 | 2015-2020 | |
| 36 | Don Sheffield | 1.26 | 2000-2011 | |
| 36 | Brian Yates | 1.26 | 2003-2012 | |
| 36 | Josh Adams | 1.26 | 2000-2014 | |
| 36 | Chris Auger | 1.26 | 2000-2009 | |
| 36 | Brad Goodman# | 1.26 | 2012-2019 | |
| 41 | Jose Estrada | 1.27 | 2000-2010 | |
| 41 | Mario Pellot | 1.27 | 2000-2011 | |
| 41 | Mike Mahoney | 1.27 | 2013-2018 | |
| 41 | Mike Felder | 1.27 | 2004-2014 | |
| 45 | Logan Johns | 1.28 | 2002-2011 | |
| 45 | Jay Russell | 1.28 | 2000-2009 | |
| 45 | Jonathan Lung | 1.28 | 2000-2011 | |
| 45 | Dan Hagen | 1.28 | 2002-2013 | |
| 45 | Nick Giese | 1.28 | 2000-2009 | |
| 50 | Ian Starcher | 1.29 | 2000-2012 | |
| 50 | Markus Mensink | 1.29 | 2000-2008 | |
| 50 | Will Moore | 1.29 | 2000-2009 | |
| 53 | Roberto Urias | 1.30 | 2000-2009 | |
| 53 | Jonathan McMahon | 1.30 | 2001-2009 | |
| 53 | Victor Ortega | 1.30 | 2000-2008 | |
| 53 | Morgan Thompson | 1.30 | 2005-2014 | |
| 53 | Travis Titus | 1.30 | 2000-2008 | |
| 58 | Tadanori Kawasaki | 1.31 | 2005-2014 | |
| 58 | Alfonso Colon | 1.31 | 2000-2009 | |
| 58 | Katsunan Yamamoto | 1.31 | 2009-2015 | |
| 58 | Andy McCullough | 1.31 | 2000-2014 | |
| 62 | Sean Prevost | 1.32 | 2005-2014 | |
| 62 | Bruce Hernandez | 1.32 | 2000-2008 | |
| 64 | Matt McPeak | 1.33 | 2000-2006 | |
| 64 | Arturo Jimenez | 1.33 | 2003-2013 | |
| 64 | Ramon Sandoval | 1.33 | 2000-2009 | |
| 67 | Daniel Bromley | 1.34 | 2000-2009 | |
| 67 | Robert Bell | 1.34 | 2005-2016 | |
| 67 | Brad Parish | 1.34 | 2000-2008 | |
| 67 | Edgar Gonzalez | 1.34 | 2000-2009 | |
| 67 | Ryan Hester | 1.34 | 2001-2011 | |
| 72 | Ricardo Cortez | 1.35 | 2005-2012 | |
| 72 | Tyler Byrd | 1.35 | 2000-2011 | |
| 74 | Matt Taub | 1.36 | 2005-2016 | |
| 75 | Greg Vanrenen | 1.37 | 2000-2011 | |
| 76 | Jonathan Pimentel | 1.38 | 2000-2011 | |
| 76 | Danny Michel | 1.38 | 2002-2011 | |
| 76 | Jake Rogers | 1.38 | 2014-2019 | |
| 76 | Jose Flores | 1.38 | 2001-2012 | |
| 80 | Alan Sweet | 1.39 | 2000-2009 | |
| 81 | C.J. Mejia | 1.40 | 2011-2019 | |
| 82 | Brian Zubia | 1.42 | 2008-2015 | |
| 82 | Mike Orlando | 1.42 | 2000-2008 | |
| 84 | Dave Vilca | 1.43 | 2000-2007 | |
| 85 | Mike Henken | 1.44 | 2001-2011 | |
| 86 | Tom Schauman | 1.48 | 2003-2010 | |
| 87 | Carlos Cancio | 1.50 | 2004-2011 |
