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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | WHIP | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Juan López | 1.08 | 2029-2044 | |
| 2 | Micah Moran | 1.10 | 2013-2019 | |
| 2 | Ánibal Moya | 1.10 | 2007-2018 | |
| 4 | Víctor Flores | 1.14 | 2009-2014 | |
| 5 | Cris Vázquez | 1.17 | 1991-1997 | |
| 5 | Orlando Espinosa | 1.17 | 2025-2038 | |
| 5 | Lance Carlson | 1.17 | 2046-2060 | |
| 8 | Ronald Ball | 1.18 | 2024-2038 | |
| 8 | John Andrasko | 1.18 | 2061-2069 | |
| 10 | Dennis Flynn | 1.19 | 2014-2028 | |
| 11 | John Banks | 1.20 | 2018-2025 | |
| 12 | Carlos Vázquez | 1.21 | 2045-2055 | |
| 12 | Pedro García | 1.21 | 2005-2012 | |
| 12 | Brodie Hynes | 1.21 | 2017-2023 | |
| 15 | Andrés Campos | 1.22 | 2003-2012 | |
| 15 | John Cooper | 1.22 | 2038-2053 | |
| 17 | George Bryant | 1.23 | 2030-2042 | |
| 17 | David Gore | 1.23 | 2021-2027 | |
| 17 | Sandro Fardelhoa | 1.23 | 2023-2027 | |
| 20 | Will Blair | 1.24 | 2005-2014 | |
| 20 | Geer Pels | 1.24 | 2049-2058 | |
| 20 | Jesús Reyna | 1.24 | 2004-2015 | |
| 20 | Scott Randell# | 1.24 | 2066-2075 | |
| 24 | Eduardo Pérez | 1.25 | 2012-2017 | |
| 24 | Mike Palmer | 1.25 | 2038-2048 | |
| 24 | Orlando Zavala | 1.25 | 2028-2045 | |
| 27 | Mike Saunders | 1.26 | 2018-2025 | |
| 27 | Ken Gunn | 1.26 | 2003-2011 | |
| 27 | Ron Bullard | 1.26 | 2004-2013 | |
| 27 | Lúcio Olvera | 1.26 | 2018-2030 | |
| 31 | José Flores | 1.27 | 2030-2039 | |
| 31 | John Scott | 1.27 | 2000-2009 | |
| 31 | Alejandro Fuentes | 1.27 | 2040-2049 | |
| 31 | John Clark | 1.27 | 1990-1999 | |
| 35 | José Serrano | 1.28 | 2024-2031 | |
| 35 | Leonardo Flores | 1.28 | 1990-1995 | |
| 35 | Jeremy McKinley | 1.28 | 2012-2017 | |
| 38 | Alex Harris | 1.29 | 2027-2044 | |
| 38 | Christopher Wicks | 1.29 | 1997-2010 | |
| 38 | Francisco Ibarra | 1.29 | 2018-2023 | |
| 41 | Taizo Yamashita | 1.30 | 2017-2030 | |
| 41 | Gabriel Carrillo | 1.30 | 2057-2063 | |
| 41 | Andrew Rice | 1.30 | 1990-1995 | |
| 44 | Brad Skyrme | 1.31 | 2048-2055 | |
| 45 | Pat Boudreau | 1.32 | 2042-2053 | |
| 45 | Edward Housden | 1.32 | 1990-1995 | |
| 45 | Andy Seymour | 1.32 | 2005-2013 | |
| 48 | Joseph Powers | 1.33 | 2024-2038 | |
| 48 | Ken Riley | 1.33 | 1990-1995 | |
| 50 | Iván Ortíz | 1.34 | 2027-2034 | |
| 50 | Ronald Coleman | 1.34 | 1990-1995 | |
| 50 | Geoffroy Paolillo | 1.34 | 2054-2060 | |
| 53 | Antonin Dubé | 1.35 | 2014-2026 | |
| 53 | Mike Witty | 1.35 | 1993-2002 | |
| 53 | Kyle Ropley | 1.35 | 2018-2025 | |
| 56 | Millard Bolton | 1.36 | 1991-2002 | |
| 56 | Jeff Miller | 1.36 | 1998-2006 | |
| 58 | Mark Charles | 1.37 | 1994-2007 | |
| 58 | Chris Thomas | 1.37 | 1990-1999 | |
| 58 | Bengt Broos | 1.37 | 2054-2063 | |
| 58 | Henry Warner | 1.37 | 2030-2040 | |
| 58 | Herman Vickers | 1.37 | 2022-2028 | |
| 63 | Juan Jose Alvarado | 1.38 | 1991-1998 | |
| 63 | Robby George | 1.38 | 2007-2016 | |
| 63 | Ron Taylor | 1.38 | 1998-2005 | |
| 63 | Tom Mays | 1.38 | 2004-2012 | |
| 63 | Jesús Camacho | 1.38 | 1999-2010 | |
| 63 | José Rodríguez | 1.38 | 2045-2058 | |
| 63 | Naruhiko Abe | 1.38 | 2023-2032 | |
| 70 | Javier Valverde | 1.39 | 2049-2056 | |
| 70 | Jonathon Roesler | 1.39 | 2030-2036 | |
| 70 | Wibren Gouloze | 1.39 | 2020-2028 | |
| 73 | Paul Burton | 1.40 | 1997-2007 | |
| 73 | Jeff Loveland | 1.40 | 2034-2040 | |
| 73 | David Avalos | 1.40 | 2065-2074 | |
| 76 | Cristovão Janela | 1.41 | 2049-2062 | |
| 76 | Fumihiko Kitajima | 1.41 | 2063-2072 | |
| 76 | Matt Meyer | 1.41 | 2061-2068 | |
| 79 | Jesús Rodríguez | 1.42 | 2045-2056 | |
| 79 | Craig Burch | 1.42 | 2039-2047 | |
| 79 | Clyde Givens | 1.42 | 1997-2002 | |
| 79 | Robbie DeBalliol | 1.42 | 2029-2042 | |
| 83 | Reginald Michael | 1.43 | 2037-2050 | |
| 83 | Mark Woods | 1.43 | 1990-2001 | |
| 83 | Michael Kramer | 1.43 | 1991-2004 | |
| 83 | Duane Bear | 1.43 | 2024-2032 | |
| 87 | José Reyes | 1.44 | 1994-2000 | |
| 87 | Craig Meyers | 1.44 | 2041-2051 | |
| 87 | Luis Maes | 1.44 | 2004-2015 | |
| 90 | Dave Jackson | 1.45 | 2004-2011 | |
| 90 | Joe Ferguson | 1.45 | 2062-2067 | |
| 92 | Juan Melendez | 1.46 | 2057-2065 | |
| 92 | Art Morris | 1.46 | 1990-1997 | |
| 92 | Burt Kuhn | 1.46 | 1990-1997 | |
| 92 | Larry Mears | 1.46 | 2063-2071 | |
| 96 | Scott de Weever | 1.47 | 2048-2062 | |
| 96 | Carlos Ramos | 1.47 | 2023-2034 | |
| 98 | Alvaro Nava# | 1.48 | 2068-2075 | |
| 98 | Bob Boyce | 1.48 | 2016-2024 | |
| 100 | Dale Talley | 1.49 | 2027-2035 |
