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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | WHIP | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | John Leary | 1.10 | 1998-2010 | |
| 1 | Gerardo Arroyo | 1.10 | 2009-2015 | |
| 3 | Ernesto Lópes | 1.12 | 2037-2049 | |
| 4 | Juan Ruíz | 1.13 | 2042-2058 | |
| 5 | David Perea | 1.14 | 2036-2048 | |
| 5 | Leonardo González | 1.14 | 2049-2057 | |
| 7 | Quentin Mullins | 1.15 | 2042-2055 | |
| 7 | Alberto Bejinez | 1.15 | 1997-2005 | |
| 9 | Adam Spurle | 1.17 | 1995-2010 | |
| 9 | Jerry Crawford | 1.17 | 2033-2044 | |
| 9 | Liam Quebell | 1.17 | 2048-2055 | |
| 9 | Elvin Willard | 1.17 | 2010-2017 | |
| 9 | Don Castor | 1.17 | 2046-2060 | |
| 9 | Callum Maybury | 1.17 | 2035-2044 | |
| 9 | Tom Bennett | 1.17 | 2044-2060 | |
| 16 | David Hoskins | 1.18 | 2018-2026 | |
| 16 | Nick Mobley | 1.18 | 2040-2055 | |
| 16 | Brad Peckford# | 1.18 | 2049-2061 | |
| 16 | Gaspar Garcia | 1.18 | 1997-2006 | |
| 16 | Will Ritter# | 1.18 | 2048-2058 | |
| 21 | Nelson Thompson | 1.19 | 2046-2061 | |
| 21 | Ghi-cheng Kum | 1.19 | 2035-2053 | |
| 21 | Alfredo Contreras | 1.19 | 2044-2059 | |
| 21 | Tim MacIntyre | 1.19 | 2009-2021 | |
| 21 | Tommy Hunter | 1.19 | 2041-2047 | |
| 21 | Hubert Rogers | 1.19 | 2015-2025 | |
| 21 | Dae-hyun Kim | 1.19 | 2045-2055 | |
| 28 | Derrek Terry | 1.20 | 2034-2047 | |
| 28 | Maurice Jeffes# | 1.20 | 2051-2062 | |
| 28 | Reid Jensen | 1.20 | 2042-2052 | |
| 28 | Tony Cabrera | 1.20 | 2039-2049 | |
| 32 | Kenny Kelly | 1.21 | 2045-2055 | |
| 32 | Armando Alvarado | 1.21 | 2013-2021 | |
| 32 | Daisuke Tomita | 1.21 | 2022-2031 | |
| 32 | Kevin Brodeur | 1.21 | 1995-2006 | |
| 32 | Yun Zhang | 1.21 | 2042-2055 | |
| 32 | Eladio Morales | 1.21 | 1995-2002 | |
| 32 | Milo Marshall | 1.21 | 2013-2019 | |
| 32 | Roberto Vargas | 1.21 | 2020-2028 | |
| 32 | César Castro | 1.21 | 2036-2042 | |
| 32 | Tony Canales | 1.21 | 2023-2040 | |
| 42 | Felipe Méndez | 1.22 | 2042-2051 | |
| 42 | Yves Masson | 1.22 | 2016-2024 | |
| 42 | Sean Jones | 1.22 | 1996-2010 | |
| 42 | Luis Hernández | 1.22 | 2020-2027 | |
| 42 | Berhane Omondi | 1.22 | 2038-2050 | |
| 42 | Clyde Pineda | 1.22 | 2028-2033 | |
| 48 | Brendon Carr | 1.23 | 2034-2048 | |
| 48 | António García# | 1.23 | 2045-2062 | |
| 48 | Addie Adriaens | 1.23 | 2040-2049 | |
| 48 | Esteban Madera | 1.23 | 1995-2006 | |
| 52 | José Olvera | 1.24 | 2023-2038 | |
| 52 | Javier Vargos | 1.24 | 2036-2044 | |
| 52 | Peyton Browning | 1.24 | 2045-2052 | |
| 52 | Tony Abrams | 1.24 | 2020-2029 | |
| 52 | Christopher Robinson | 1.24 | 2017-2027 | |
| 52 | Lee Broadberry | 1.24 | 2047-2058 | |
| 58 | Peter Roop# | 1.25 | 2046-2060 | |
| 58 | Rodrigo Rojas | 1.25 | 1996-2008 | |
| 58 | Lance Carter | 1.25 | 2037-2049 | |
| 58 | Diego García | 1.25 | 2026-2036 | |
| 58 | Héctor Méndez | 1.25 | 2016-2031 | |
| 58 | Cody Lee | 1.25 | 2029-2037 | |
| 58 | Adam Weisgerber | 1.25 | 1995-2004 | |
| 65 | Harold Crothers | 1.26 | 1996-2003 | |
| 65 | Yu Vgotmael | 1.26 | 2037-2050 | |
| 65 | Martin Villa | 1.26 | 2041-2051 | |
| 65 | Roberto Martínez | 1.26 | 2022-2035 | |
| 65 | Michail Nagibin | 1.26 | 2034-2042 | |
| 65 | Rafael López# | 1.26 | 2045-2056 | |
| 65 | Mike Griffin# | 1.26 | 2049-2062 | |
| 65 | Jim Pollock | 1.26 | 2044-2061 | |
| 73 | Augusto Villarreal | 1.27 | 2039-2047 | |
| 73 | Iván Ruíz# | 1.27 | 2044-2062 | |
| 73 | Kevin McAdam | 1.27 | 1995-2004 | |
| 73 | Gary McCabe | 1.27 | 2004-2012 | |
| 73 | Juan Pagán | 1.27 | 2027-2037 | |
| 73 | Tokugawa Takahashi# | 1.27 | 2051-2062 | |
| 73 | William Dawson | 1.27 | 2031-2045 | |
| 73 | Arthur Rogalski | 1.27 | 2044-2058 | |
| 73 | Thomas Alexander | 1.27 | 2046-2059 | |
| 73 | Louis Eggleston | 1.27 | 1998-2010 | |
| 73 | Mu'tazz bin Akram# | 1.27 | 2050-2062 | |
| 73 | Juan Crespo | 1.27 | 2017-2022 | |
| 73 | Webster Ward | 1.27 | 1996-2007 | |
| 86 | Chico Ramirez | 1.28 | 1995-2006 | |
| 86 | Alfonso Colomo | 1.28 | 2034-2044 | |
| 86 | Finley Stabb | 1.28 | 2013-2026 | |
| 86 | Javier Gallegos | 1.28 | 2047-2058 | |
| 86 | Alberto Martínez | 1.28 | 2022-2032 | |
| 86 | Gill O'Puddin | 1.28 | 2011-2022 | |
| 86 | José García | 1.28 | 2044-2056 | |
| 86 | Guy Shroyer | 1.28 | 2042-2059 | |
| 94 | Manny López | 1.29 | 2030-2039 | |
| 94 | Rick Clarijs# | 1.29 | 2053-2060 | |
| 94 | Josh Holt | 1.29 | 2010-2018 | |
| 94 | Bill Keefe# | 1.29 | 2050-2062 | |
| 94 | José Bray | 1.29 | 2048-2060 | |
| 94 | Nelson Williams | 1.29 | 1998-2009 | |
| 94 | Bob Ramírez | 1.29 | 2037-2049 |
