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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | WHIP | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Alex Mustaikis | 1.06 | 1940-1943 | |
| 1 | Paul Campbell | 1.06 | 1966-1968 | |
| 3 | Chet Covington | 1.12 | 1942-1944 | |
| 4 | Roger Slagle# | 1.13 | 1976-1978 | |
| 4 | Henry Holmes | 1.13 | 1974-1980 | |
| 6 | Ken Clay | 1.18 | 1975-1979 | |
| 7 | Orie Arntzen | 1.19 | 1941-1950 | |
| 8 | Louis Whetstone# | 1.22 | 1978-1981 | |
| 8 | Reggie Grabowski | 1.22 | 1940-1942 | |
| 10 | Xavier Rescigno | 1.24 | 1940-1951 | |
| 10 | Tony Perry | 1.24 | 1974-1978 | |
| 12 | Thomas Arruda | 1.25 | 1963-1968 | |
| 12 | Bob Heffner | 1.25 | 1959-1962 | |
| 12 | Gregory Wilkes# | 1.25 | 1978-1981 | |
| 15 | George Diehl | 1.26 | 1940-1942 | |
| 16 | Michael Heintz | 1.27 | 1970-1975 | |
| 16 | Dave Downs | 1.27 | 1973-1980 | |
| 18 | Robert May | 1.28 | 1972-1980 | |
| 18 | Dick Pole | 1.28 | 1970-1974 | |
| 20 | Steven Samuelson | 1.29 | 1977-1980 | |
| 21 | Ben Cardoni | 1.31 | 1943-1954 | |
| 21 | Akira Kawahara | 1.31 | 1975-1978 | |
| 21 | Gary James | 1.31 | 1976-1980 | |
| 21 | Don Grate | 1.31 | 1945-1950 | |
| 25 | Ray Peters | 1.32 | 1970-1972 | |
| 25 | Archie Dawson | 1.32 | 1966-1971 | |
| 27 | Mickey McDermott | 1.33 | 1945-1948 | |
| 27 | Art Doll | 1.33 | 1940-1943 | |
| 27 | Fred Anyzeski | 1.33 | 1974-1977 | |
| 30 | Francis Panick | 1.34 | 1975-1977 | |
| 31 | Wayne Bradley | 1.35 | 1977-1980 | |
| 32 | Ralph McCabe | 1.36 | 1943-1945 | |
| 33 | Billy MacLeod | 1.37 | 1963-1967 | |
| 34 | Dave Wallace | 1.38 | 1970-1975 | |
| 34 | Jim Rittwage | 1.38 | 1964-1969 | |
| 36 | Bob Lacey | 1.39 | 1974-1977 | |
| 37 | Dennis Yard | 1.40 | 1970-1977 | |
| 38 | Leo Williams | 1.41 | 1971-1977 | |
| 38 | Ken Wright | 1.41 | 1966-1969 | |
| 40 | Eli Hodkey | 1.42 | 1942-1947 | |
| 40 | Mike Willis | 1.42 | 1971-1975 | |
| 40 | Jack Jenkins | 1.42 | 1963-1966 | |
| 43 | Tim Murphy | 1.43 | 1973-1977 | |
| 44 | Brad Gratz | 1.44 | 1972-1979 | |
| 45 | Michael Whitson | 1.45 | 1970-1972 | |
| 46 | Dave Moore | 1.46 | 1973-1977 | |
| 47 | Guido Grilli | 1.47 | 1960-1963 | |
| 48 | Ken Poulsen | 1.48 | 1967-1968 | |
| 49 | Steven McNulty | 1.49 | 1976-1978 | |
| 50 | Ken Reynolds | 1.50 | 1969-1972 | |
| 51 | Gerald Lanning | 1.51 | 1970-1973 | |
| 52 | Jimmy Blackmon | 1.54 | 1970-1973 | |
| 53 | Jim McKee | 1.55 | 1970-1971 | |
| 54 | Craig Scramuzzo | 1.56 | 1970-1975 | |
| 55 | Bill S Rodgers | 1.58 | 1944-1951 | |
| 56 | Edward Szado | 1.60 | 1973-1976 | |
| 57 | Jordan Salaiz | 1.62 | 1975-1980 |
