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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | WHIP | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Scotty Bannatyne# | 1.12 | 2058-2065 | |
| 2 | Ángelo Rodríguez# | 1.14 | 2060-2066 | |
| 3 | Broc Rodríguez | 1.16 | 2024-2031 | |
| 4 | Ánibal Drake# | 1.17 | 2057-2063 | |
| 5 | Jared Montgomery | 1.18 | 2044-2055 | |
| 6 | José Antonio Díaz | 1.19 | 2046-2055 | |
| 6 | Cristián Martínez | 1.19 | 2048-2056 | |
| 8 | Sam Michael | 1.20 | 2016-2026 | |
| 9 | Loren Williams | 1.22 | 2049-2057 | |
| 10 | Doug Wheeler | 1.23 | 2023-2033 | |
| 10 | Pancho Gómez | 1.23 | 2041-2049 | |
| 12 | Shawn Bradley | 1.24 | 2043-2053 | |
| 13 | Héctor Martínez | 1.26 | 2027-2044 | |
| 14 | Earl Dougall | 1.27 | 2017-2028 | |
| 14 | Raúl Gaudreau | 1.27 | 2042-2053 | |
| 16 | Duane Perkins | 1.29 | 2040-2047 | |
| 17 | Rubén Rosales | 1.32 | 2041-2049 | |
| 18 | Valentín Manyes | 1.33 | 2015-2021 | |
| 18 | Clifford McShadder | 1.33 | 2021-2026 | |
| 18 | Shawn Collins | 1.33 | 2044-2050 | |
| 18 | Pete Evans# | 1.33 | 2057-2064 | |
| 22 | Mitch Williams | 1.34 | 2044-2050 | |
| 23 | Pat Gil Regueira | 1.36 | 2014-2018 | |
| 24 | Artie Dunn | 1.37 | 2027-2036 | |
| 24 | Jared Rodgers | 1.37 | 2040-2049 | |
| 24 | Robby Nash | 1.37 | 2022-2028 | |
| 24 | Víctor Martínez | 1.37 | 2039-2047 | |
| 24 | Serge Roy | 1.37 | 2011-2021 | |
| 24 | Bill Ruby | 1.37 | 2019-2029 | |
| 30 | Anastasio Hernández | 1.39 | 2021-2030 | |
| 31 | Davis Marguel | 1.43 | 2014-2022 | |
| 31 | Kiyoshi Yoshimura | 1.43 | 2024-2031 | |
| 33 | Ernie Howard | 1.46 | 2025-2034 | |
| 34 | Mike McDonald | 1.47 | 2015-2027 | |
| 35 | Víctor Rodríguez | 1.58 | 2020-2026 |
