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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | WHIP | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Alejandro Lafrosia | 1.24 | 2025-2031 | |
| 2 | Sam Hatt | 1.30 | 2025-2030 | |
| 3 | Jeffery Francis | 1.31 | 2016-2027 | |
| 4 | Robert Hood | 1.33 | 2015-2023 | |
| 5 | Francis Baker | 1.34 | 2013-2020 | |
| 6 | Steve Dallas | 1.35 | 2014-2023 | |
| 7 | J.R. Murphy | 1.36 | 2016-2025 | |
| 8 | Juan Ramírez# | 1.39 | 2028-2034 | |
| 8 | Tim Rose | 1.39 | 2017-2030 | |
| 8 | Pedro Hernández | 1.39 | 2015-2020 | |
| 8 | Bob Johnston# | 1.39 | 2027-2034 | |
| 12 | Cain Chatfield | 1.40 | 2020-2030 | |
| 12 | Scott Gorman | 1.40 | 2012-2022 | |
| 12 | Rubén Cabrera# | 1.40 | 2024-2028 | |
| 15 | Eduardo Gamboa | 1.41 | 2014-2020 | |
| 15 | Michael Smith# | 1.41 | 2027-2031 | |
| 17 | Tommy Bartlett | 1.43 | 2021-2029 | |
| 17 | Dongdo-pa Chen# | 1.43 | 2025-2034 | |
| 17 | Kazuhiro Kouno | 1.43 | 2020-2027 | |
| 17 | Daniel Wilson# | 1.43 | 2023-2033 | |
| 17 | Joe Kenner | 1.43 | 2019-2033 | |
| 17 | Yeong-suk Kim# | 1.43 | 2021-2034 | |
| 23 | Pablo Cuevas | 1.44 | 2015-2029 | |
| 23 | Harold Hayne# | 1.44 | 2023-2033 | |
| 23 | Bernardo Lara | 1.44 | 2016-2029 | |
| 23 | Scott Prince | 1.44 | 2013-2020 | |
| 23 | Arturo González | 1.44 | 2013-2028 | |
| 28 | Mark Stevenson | 1.45 | 2019-2028 | |
| 28 | Andrew Johnson# | 1.45 | 2028-2034 | |
| 30 | Devayukta Tushar# | 1.46 | 2023-2032 | |
| 30 | Bob Brown# | 1.46 | 2027-2034 | |
| 30 | Sam Moore | 1.46 | 2021-2026 | |
| 30 | Phil Phillips# | 1.46 | 2027-2034 | |
| 30 | Michael Moyer# | 1.46 | 2022-2034 | |
| 30 | Nelson Hill | 1.46 | 2014-2025 | |
| 36 | Paul Simpson | 1.47 | 2020-2029 | |
| 36 | Joe McLernon | 1.47 | 2016-2022 | |
| 38 | Wayne Penfield | 1.48 | 2020-2029 | |
| 38 | Daniel Bonnin | 1.48 | 2019-2028 | |
| 38 | Al Bates# | 1.48 | 2027-2034 | |
| 38 | Takeji Ogawa# | 1.48 | 2026-2034 | |
| 38 | Félix Barrera | 1.48 | 2019-2027 | |
| 43 | Chuk-yan Bi | 1.49 | 2022-2033 | |
| 44 | Miguel Bernal | 1.50 | 2023-2032 | |
| 44 | James Akehurst# | 1.50 | 2029-2034 | |
| 44 | Orlando Marés | 1.50 | 2024-2030 | |
| 44 | Goro Ota# | 1.50 | 2029-2034 | |
| 44 | Trey Robinson# | 1.50 | 2024-2034 | |
| 44 | Almas bin Su'ud# | 1.50 | 2027-2034 | |
| 44 | You-liang Rang# | 1.50 | 2023-2034 | |
| 44 | Kagehisa Saikawa# | 1.50 | 2022-2034 | |
| 52 | Masuhiro Kondo | 1.51 | 2015-2022 | |
| 52 | Eric Walker | 1.51 | 2012-2021 | |
| 52 | Joe Hurst# | 1.51 | 2025-2033 | |
| 52 | Chris Baxter | 1.51 | 2019-2026 | |
| 52 | Rick Childress# | 1.51 | 2026-2034 | |
| 57 | John Slater | 1.52 | 2018-2027 | |
| 57 | Benny Hartley# | 1.52 | 2026-2034 | |
| 57 | Fred Watson | 1.52 | 2018-2030 | |
| 57 | Yoritomo Ine | 1.52 | 2019-2025 | |
| 61 | José Díaz | 1.53 | 2016-2029 | |
| 61 | Scott Roberts | 1.53 | 2019-2029 | |
| 61 | Jacob Angle | 1.53 | 2017-2029 | |
| 61 | Graham Hardingham# | 1.53 | 2023-2031 | |
| 65 | Jeff Olsen | 1.54 | 2012-2020 | |
| 65 | Yeijiro Ishihara# | 1.54 | 2022-2034 | |
| 65 | Anthony McIntyre | 1.54 | 2022-2034 | |
| 65 | Esteban Martínez | 1.54 | 2017-2029 | |
| 65 | Odoardo Bairros | 1.54 | 2015-2027 | |
| 65 | Tony Green | 1.54 | 2016-2021 | |
| 65 | Bi`nh Trieu# | 1.54 | 2028-2034 | |
| 72 | John Martin | 1.55 | 2012-2021 | |
| 72 | Ronald Lee# | 1.55 | 2025-2034 | |
| 72 | Senzo Nakashima | 1.55 | 2024-2030 | |
| 72 | Aaron Dilnot | 1.55 | 2023-2030 | |
| 76 | Kyoji Mizutani# | 1.56 | 2023-2032 | |
| 76 | Steve Johnston | 1.56 | 2016-2023 | |
| 76 | Peter Barrett | 1.56 | 2012-2021 | |
| 76 | George Bedford | 1.56 | 2021-2029 | |
| 80 | Carlos León# | 1.57 | 2022-2033 | |
| 80 | Guillermo Miranda | 1.57 | 2016-2025 | |
| 80 | Paulus van Zundert | 1.57 | 2023-2028 | |
| 80 | Alberto Rivera# | 1.57 | 2022-2033 | |
| 84 | Jaime Hernández | 1.58 | 2013-2022 | |
| 84 | Steve Lawrence | 1.58 | 2015-2022 | |
| 84 | Bob Alexander# | 1.58 | 2024-2032 | |
| 87 | Anandam Ramanathan# | 1.59 | 2021-2034 | |
| 88 | Michael Walsh# | 1.61 | 2025-2034 | |
| 88 | Chris Riddle# | 1.61 | 2022-2034 | |
| 88 | Evan Taylor | 1.61 | 2017-2022 | |
| 91 | Ernie Peters | 1.62 | 2012-2020 | |
| 91 | Terumoto Yamamoto | 1.62 | 2019-2028 | |
| 91 | Fabián Torres | 1.62 | 2016-2022 | |
| 94 | Rino Nitisastro# | 1.63 | 2025-2033 | |
| 94 | Edgardo Félix | 1.63 | 2015-2029 | |
| 94 | Buddy Wills | 1.63 | 2016-2024 | |
| 94 | Fred Campbell# | 1.63 | 2026-2033 | |
| 94 | Jordan Johnstone | 1.63 | 2013-2020 | |
| 99 | Johnny Vallance | 1.64 | 2019-2023 | |
| 99 | Luis Miguel Hiracheta | 1.64 | 2012-2024 |
