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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | WHIP | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Dave Eilers | 1.15 | 1961-1963 | |
| 2 | Bonifacio Aponte | 1.22 | 1970-1974 | |
| 3 | Thornton Kipper | 1.24 | 1957-1959 | |
| 4 | Gerard Thomas | 1.25 | 1972-1976 | |
| 5 | Clark Ullom | 1.27 | 1970-1974 | |
| 6 | Preston Hanna# | 1.29 | 1971-1973 | |
| 7 | Jack Curtis | 1.33 | 1959-1959 | |
| 7 | Don Yingling | 1.33 | 1964-1965 | |
| 9 | Robert Sekel | 1.35 | 1973-1975 | |
| 9 | David Simplot | 1.35 | 1972-1976 | |
| 11 | Mark Grant# | 1.36 | 1980-1981 | |
| 11 | George Gerberman | 1.36 | 1962-1964 | |
| 13 | James Wright | 1.37 | 1979-1981 | |
| 14 | Brian Ryder# | 1.38 | 1979-1981 | |
| 15 | William Hagins | 1.40 | 1971-1974 | |
| 16 | Bill T Harris | 1.43 | 1962-1965 | |
| 17 | Brian Duffy# | 1.44 | 1979-1981 | |
| 18 | Craig Mitchell# | 1.46 | 1974-1976 | |
| 18 | Odell Jones | 1.46 | 1971-1973 | |
| 20 | David Burroughs | 1.47 | 1979-1981 | |
| 21 | Fred Seibly | 1.48 | 1972-1976 | |
| 22 | Carl Sapp | 1.50 | 1975-1978 | |
| 23 | Mark Gland | 1.52 | 1971-1976 | |
| 24 | Alex Muginstein# | 1.54 | 1977-1979 | |
| 24 | Larry Williams | 1.54 | 1979-1981 | |
| 24 | George Riley | 1.54 | 1974-1978 | |
| 27 | Bob Sprout | 1.55 | 1962-1963 | |
| 27 | Eddie Holly | 1.55 | 1971-1975 | |
| 27 | Daniel Kaupla | 1.55 | 1971-1976 | |
| 30 | Steven Christison# | 1.56 | 1979-1980 | |
| 31 | Steven Norwood | 1.57 | 1977-1979 | |
| 31 | Terry Watkins# | 1.57 | 1977-1981 | |
| 33 | Pedro Morales | 1.58 | 1971-1976 | |
| 34 | Jesus Moreno# | 1.59 | 1978-1979 | |
| 35 | Dick Burwell | 1.61 | 1960-1961 | |
| 35 | Donald Cline# | 1.61 | 1978-1979 | |
| 37 | Jordan Montiel | 1.62 | 1974-1978 | |
| 37 | Brad Carpenter | 1.62 | 1970-1975 | |
| 37 | Donald Minnick# | 1.62 | 1979-1981 | |
| 40 | Larry Lamonde# | 1.63 | 1980-1981 | |
| 41 | Daniel Pierce# | 1.65 | 1978-1981 | |
| 41 | Doug Harrison | 1.65 | 1976-1979 | |
| 43 | David George | 1.66 | 1971-1974 | |
| 44 | Gary Sanossian | 1.69 | 1962-1964 | |
| 45 | Mark Humphrey# | 1.71 | 1972-1976 | |
| 45 | Alex Hernandez | 1.71 | 1972-1977 | |
| 47 | Joe McClain# | 1.73 | 1978-1980 | |
| 48 | Jose Villamil# | 1.74 | 1972-1976 | |
| 49 | Allen Wesolowski# | 1.78 | 1979-1981 | |
| 50 | Larry Ferst# | 1.79 | 1978-1980 | |
| 51 | Miguel Valdez# | 1.82 | 1977-1981 | |
| 52 | Rodolfo Corderi# | 1.87 | 1977-1981 |
