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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | WHIP | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Ramón Costello | 1.01 | 2013 | |
| 1 | Daniel Díaz | 1.01 | 2013 | |
| 3 | Elvis Callahan | 1.06 | 2014 | |
| 3 | Sam Hatt | 1.06 | 2022 | |
| 5 | Carl O'Quinn | 1.08 | 2015 | |
| 5 | Roberto Gonzáles | 1.08 | 2027 | |
| 5 | Arend Bakker | 1.08 | 2040 | |
| 8 | Jay Retter | 1.10 | 2034 | |
| 9 | Tommy Bartlett | 1.11 | 2030 | |
| 10 | Dan Ayers | 1.12 | 2042 | |
| 11 | Héctor González | 1.13 | 2039 | |
| 11 | Eric Watson | 1.13 | 2039 | |
| 11 | Máximo Cucalón | 1.13 | 2017 | |
| 11 | Bobby Crawford# | 1.13 | 2053 | |
| 11 | Mike Jones# | 1.13 | 2049 | |
| 16 | Cliff Clark | 1.14 | 2012 | |
| 16 | Masamichi Takeda | 1.14 | 2030 | |
| 16 | Héctor González | 1.14 | 2032 | |
| 16 | Román Alonzo | 1.14 | 2025 | |
| 20 | Calvin Townend | 1.15 | 2014 | |
| 20 | Pedro Díaz | 1.15 | 2019 | |
| 22 | John Martin | 1.16 | 2012 | |
| 22 | Le-song Kao | 1.16 | 2025 | |
| 22 | Felipe Rodríguez | 1.16 | 2026 | |
| 25 | Jimmy Hunter | 1.17 | 2032 | |
| 25 | Jeffery Francis | 1.17 | 2015 | |
| 25 | Scott Wade | 1.17 | 2013 | |
| 25 | Alexis Gonzales | 1.17 | 2044 | |
| 25 | Dao-zi Chou | 1.17 | 2030 | |
| 25 | Matis Barrier | 1.17 | 2028 | |
| 25 | Ron Callaghan | 1.17 | 2034 | |
| 32 | Nick Clark# | 1.18 | 2056 | |
| 32 | Héctor González | 1.18 | 2031 | |
| 32 | Brendan Greene# | 1.18 | 2052 | |
| 32 | Scott Ralston | 1.18 | 2041 | |
| 36 | Alejandro Anaya# | 1.19 | 2056 | |
| 36 | Matt Moyer | 1.19 | 2045 | |
| 36 | Kulapati Pandian | 1.19 | 2021 | |
| 36 | Matt White# | 1.19 | 2054 | |
| 36 | Biagio Strambi# | 1.19 | 2057 | |
| 36 | Kirk Snyder | 1.19 | 2015 | |
| 42 | Mike True | 1.20 | 2040 | |
| 42 | Luis Velazquez | 1.20 | 2040 | |
| 42 | Jose Albertrani | 1.20 | 2025 | |
| 42 | Tim O'Shana | 1.20 | 2043 | |
| 46 | Lloyd Huggins | 1.21 | 2031 | |
| 46 | Elias Zuniga# | 1.21 | 2051 | |
| 46 | Saiyid Mashwanis | 1.21 | 2027 | |
| 46 | Daniel Díaz | 1.21 | 2012 | |
| 50 | Tony Cisneros | 1.22 | 2042 | |
| 50 | Dave Munier | 1.22 | 2032 | |
| 50 | Kichibei Ozawa | 1.22 | 2025 | |
| 50 | Roberto Mantilla# | 1.22 | 2051 | |
| 50 | Malik Shelmon# | 1.22 | 2050 | |
| 50 | Pedro Díaz | 1.22 | 2020 | |
| 50 | Ron Hodges | 1.22 | 2012 | |
| 57 | Pedro Renteria# | 1.23 | 2049 | |
| 57 | Kuniyoshi Hasegawa | 1.23 | 2019 | |
| 57 | Pedro Díaz | 1.23 | 2021 | |
| 57 | Yoann Tanguy# | 1.23 | 2052 | |
| 57 | Leonard Veeck | 1.23 | 2016 | |
| 57 | Finlay Coinneach | 1.23 | 2024 | |
| 63 | Fidel Cardona# | 1.24 | 2054 | |
| 63 | Diogo Negreiros | 1.24 | 2015 | |
| 63 | Fernando Vazquez# | 1.24 | 2052 | |
| 63 | Steve DuCharme | 1.24 | 2043 | |
| 67 | Luis López | 1.25 | 2012 | |
| 67 | Barrett Lamb | 1.25 | 2033 | |
| 67 | Blake Gottshall# | 1.25 | 2057 | |
| 67 | Scott Rudge# | 1.25 | 2057 | |
| 67 | Cachari Suketu | 1.25 | 2025 | |
| 67 | Wing-chiu Zhou | 1.25 | 2023 | |
| 67 | Koi-sho An | 1.25 | 2025 | |
| 67 | Baltwin Baars | 1.25 | 2024 | |
| 67 | Rich Martines# | 1.25 | 2054 | |
| 76 | Kyle Ragsdale# | 1.26 | 2049 | |
| 76 | Ramon Gomez | 1.26 | 2040 | |
| 76 | Gonzalo Ramírez | 1.26 | 2025 | |
| 76 | Giovanni Graves# | 1.26 | 2048 | |
| 76 | Chuk-yan Chio | 1.26 | 2028 | |
| 76 | Ramón Gómez | 1.26 | 2026 | |
| 76 | Jorge Matos | 1.26 | 2014 | |
| 76 | Mike Aviles# | 1.26 | 2057 | |
| 76 | Carlos Ramirez | 1.26 | 2041 | |
| 76 | Rich Lucas# | 1.26 | 2053 | |
| 76 | Pedre Pedrogo | 1.26 | 2030 | |
| 87 | Kitaw Kanaifu# | 1.27 | 2056 | |
| 87 | Adharma Sughavanam | 1.27 | 2028 | |
| 87 | Luis Padro# | 1.27 | 2052 | |
| 87 | Song Wa | 1.27 | 2022 | |
| 87 | Clay Melsom | 1.27 | 2030 | |
| 87 | Chuk-yan Chio | 1.27 | 2027 | |
| 87 | Elmer Turner | 1.27 | 2027 | |
| 87 | Roger Fuerte# | 1.27 | 2055 | |
| 87 | Robinson Pedercini | 1.27 | 2021 | |
| 87 | Na'il bin Bashshar | 1.27 | 2022 | |
| 87 | Dongdo-pa Chen | 1.27 | 2030 | |
| 87 | Manny Villalobos | 1.27 | 2046 | |
| 87 | Gerald Major | 1.27 | 2021 | |
| 100 | Mario Zayas | 1.28 | 2041 |
