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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | WHIP | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Hal Erickson | 1.11 | 1951-1952 | |
| 2 | Dave Hoskins | 1.15 | 1952-1958 | |
| 3 | Michael Elwood | 1.16 | 1973-1977 | |
| 4 | Joe Landrum | 1.17 | 1949-1955 | |
| 4 | Andrew Castillo# | 1.17 | 1973-1978 | |
| 4 | Ed Nunez# | 1.17 | 1978-1981 | |
| 7 | Fred Martin | 1.18 | 1941-1958 | |
| 7 | Willie Ramsdell | 1.18 | 1946-1954 | |
| 9 | Clarence Beers | 1.19 | 1940-1953 | |
| 9 | Gary Sarno# | 1.19 | 1978-1981 | |
| 9 | Ted Wilks | 1.19 | 1940-1956 | |
| 12 | Danny Arizola# | 1.20 | 1979-1981 | |
| 13 | Gordon Maltzberger | 1.21 | 1941-1942 | |
| 13 | Dan Spillner | 1.21 | 1972-1978 | |
| 13 | Robert Mestek | 1.21 | 1973-1974 | |
| 13 | Toru Hamaura# | 1.21 | 1972-1979 | |
| 13 | Keith Atherton# | 1.21 | 1979-1981 | |
| 18 | Les Mueller | 1.22 | 1940-1942 | |
| 18 | Ed Chandler | 1.22 | 1946-1949 | |
| 18 | Ralph Hamner | 1.22 | 1941-1953 | |
| 18 | Michael Van De Casteele | 1.22 | 1972-1978 | |
| 22 | Floyd Wooldridge | 1.23 | 1952-1955 | |
| 22 | Jose G Santiago | 1.23 | 1952-1959 | |
| 22 | Greg Terlecky | 1.23 | 1973-1975 | |
| 22 | Prince Oana | 1.23 | 1940-1947 | |
| 22 | Ted Wieand | 1.23 | 1955-1962 | |
| 22 | Gary Marks | 1.23 | 1973-1975 | |
| 28 | Sterling Slaughter | 1.24 | 1963-1967 | |
| 28 | Robert Mayhew | 1.24 | 1977-1979 | |
| 28 | Doyle Lade | 1.24 | 1941-1954 | |
| 28 | Al Wihtol | 1.24 | 1970-1977 | |
| 32 | Don Arlich | 1.25 | 1964-1967 | |
| 33 | Jack Creel | 1.26 | 1942-1953 | |
| 33 | Hank Wyse | 1.26 | 1948-1952 | |
| 33 | Tom McGough# | 1.26 | 1974-1980 | |
| 33 | Red Murff | 1.26 | 1953-1955 | |
| 37 | Herb Hippauf | 1.27 | 1962-1965 | |
| 37 | Billy Muffett | 1.27 | 1951-1957 | |
| 37 | Bruce Ellingsen | 1.27 | 1970-1973 | |
| 40 | Brian Bach | 1.28 | 1970-1972 | |
| 40 | Edward Orick# | 1.28 | 1978-1981 | |
| 40 | Floyd Speer | 1.28 | 1941-1950 | |
| 40 | Len Barker | 1.28 | 1973-1974 | |
| 40 | Robert Ware | 1.28 | 1975-1976 | |
| 40 | George Whileyman | 1.28 | 1977-1978 | |
| 46 | Al Papai | 1.29 | 1947-1958 | |
| 46 | Otho Nitcholas | 1.29 | 1940-1949 | |
| 46 | Charlie Fuchs | 1.29 | 1940-1942 | |
| 49 | Mike Clark | 1.30 | 1951-1958 | |
| 49 | Cal Dorsett | 1.30 | 1946-1949 | |
| 49 | Terry Felton# | 1.30 | 1976-1981 | |
| 49 | George Gerberman | 1.30 | 1963-1968 | |
| 49 | Gil Maldonado# | 1.30 | 1979-1981 | |
| 54 | Hugo Klaerner | 1.31 | 1940-1942 | |
| 54 | Jim Flynn | 1.31 | 1970-1973 | |
| 54 | Bob Mabe | 1.31 | 1955-1956 | |
| 54 | Walt Lanfranconi | 1.31 | 1949-1952 | |
| 54 | Robert Box# | 1.31 | 1976-1980 | |
| 59 | Larry Landreth | 1.32 | 1973-1978 | |
| 59 | Robert Ulrich | 1.32 | 1975-1976 | |
| 59 | Sid Monge | 1.32 | 1971-1973 | |
| 59 | John Andre | 1.32 | 1953-1955 | |
| 59 | Jeff Pryor | 1.32 | 1970-1973 | |
| 59 | Roy J Thomas# | 1.32 | 1971-1981 | |
| 65 | Al LaMacchia | 1.33 | 1942-1950 | |
| 65 | Roric Harrison | 1.33 | 1968-1974 | |
| 65 | Edward Sempsrott | 1.33 | 1978-1980 | |
| 65 | Thomas King | 1.33 | 1970-1977 | |
| 65 | Ben Menard | 1.33 | 1971-1975 | |
| 70 | Joe Blake | 1.34 | 1971-1976 | |
| 70 | Mike Chris | 1.34 | 1976-1980 | |
| 72 | Morrie Steevens | 1.35 | 1961-1965 | |
| 72 | Charlie Williams | 1.35 | 1969-1975 | |
| 74 | David Allen | 1.36 | 1971-1975 | |
| 74 | Larry Marshall | 1.36 | 1974-1978 | |
| 76 | David Nelson | 1.37 | 1973-1978 | |
| 76 | Tom King | 1.37 | 1971-1977 | |
| 78 | Wayne McLeland | 1.38 | 1949-1955 | |
| 78 | Chuck Locke | 1.38 | 1954-1957 | |
| 78 | John Hills# | 1.38 | 1979-1981 | |
| 78 | Len Gilmore | 1.38 | 1946-1949 | |
| 82 | Ron Schueler# | 1.40 | 1968-1971 | |
| 82 | Ernest Groth | 1.40 | 1947-1956 | |
| 82 | Ryne Duren | 1.40 | 1952-1955 | |
| 82 | Chris Knapp | 1.40 | 1975-1980 | |
| 82 | Al Schroll | 1.40 | 1956-1957 | |
| 87 | Bill Greason | 1.41 | 1952-1956 | |
| 88 | Dennis Miller | 1.42 | 1975-1978 | |
| 88 | Scott Marchael | 1.42 | 1972-1976 | |
| 88 | Tommy Fine | 1.42 | 1949-1956 | |
| 88 | Terry Hansen | 1.42 | 1970-1975 | |
| 92 | Chip Lang | 1.43 | 1970-1975 | |
| 92 | Dean Burk | 1.43 | 1967-1971 | |
| 92 | Jim Willis | 1.43 | 1950-1957 | |
| 95 | Jamie Easterly | 1.44 | 1970-1976 | |
| 95 | John McDonald# | 1.44 | 1979-1981 | |
| 95 | Bob Ferris# | 1.44 | 1977-1981 | |
| 95 | Michael Henderson | 1.44 | 1972-1978 | |
| 95 | Harold Jeffcoat | 1.44 | 1968-1971 | |
| 100 | Bobby Herrera | 1.45 | 1947-1954 |
