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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | WHIP | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Warren Hacker | 0.94 | 1962-1966 | |
| 2 | Mauricio Valdivia# | 1.01 | 1979-1981 | |
| 3 | Pat Jones# | 1.04 | 1974-1981 | |
| 4 | Jim Sanders | 1.10 | 1975-1980 | |
| 5 | Tom Hausman# | 1.14 | 1976-1981 | |
| 5 | Vern Geishert | 1.14 | 1970-1974 | |
| 7 | Ted Wilks | 1.15 | 1942-1955 | |
| 8 | Mark Lemongello# | 1.17 | 1973-1976 | |
| 8 | Larry Christenson# | 1.17 | 1973-1979 | |
| 10 | Harry Brecheen | 1.18 | 1940-1942 | |
| 10 | Andrew Muhlstock# | 1.18 | 1975-1981 | |
| 12 | Richard Mahlmann# | 1.19 | 1972-1974 | |
| 13 | Ramon Beltran# | 1.20 | 1975-1979 | |
| 13 | Chuck Taylor | 1.20 | 1963-1969 | |
| 15 | Will McEnaney | 1.21 | 1973-1976 | |
| 15 | Victor Sanchez# | 1.21 | 1974-1975 | |
| 15 | Robert Mestek | 1.21 | 1975-1980 | |
| 15 | Preacher Roe | 1.21 | 1941-1943 | |
| 15 | Stu Miller | 1.21 | 1952-1968 | |
| 20 | Al Dopfel# | 1.23 | 1974-1977 | |
| 20 | Don Lee | 1.23 | 1957-1966 | |
| 20 | Tom Parsons | 1.23 | 1964-1968 | |
| 23 | Victor Rose# | 1.24 | 1972-1974 | |
| 24 | Tom Hilgendorf | 1.25 | 1963-1970 | |
| 24 | Otho Nitcholas | 1.25 | 1943-1947 | |
| 24 | Frank Pastore# | 1.25 | 1975-1981 | |
| 24 | Doug Bird# | 1.25 | 1970-1971 | |
| 28 | Mel Wright | 1.26 | 1953-1961 | |
| 28 | Barney Schultz | 1.26 | 1951-1966 | |
| 28 | Butch Wensloff | 1.26 | 1940-1942 | |
| 31 | Chris Zachary | 1.27 | 1965-1969 | |
| 31 | Al Worthington | 1.27 | 1953-1962 | |
| 31 | Charlie Leibrandt# | 1.27 | 1978-1981 | |
| 31 | Al Widmar | 1.27 | 1955-1958 | |
| 31 | Alex Vasquez# | 1.27 | 1976-1980 | |
| 31 | Joaquin Andujar# | 1.27 | 1975-1977 | |
| 37 | Pat Zachry | 1.28 | 1971-1980 | |
| 37 | Pete Hamm# | 1.28 | 1970-1973 | |
| 37 | Dick Tidrow | 1.28 | 1970-1975 | |
| 37 | Mardie Cornejo | 1.28 | 1976-1979 | |
| 41 | Jim Koering | 1.29 | 1970-1977 | |
| 41 | Jim L McDonald | 1.29 | 1955-1960 | |
| 41 | Paul Splittorff | 1.29 | 1969-1974 | |
| 44 | Bob Welch# | 1.30 | 1977-1981 | |
| 44 | Hank Wyse | 1.30 | 1940-1951 | |
| 44 | Bud Byerly | 1.30 | 1948-1959 | |
| 47 | Howie Reed | 1.31 | 1960-1968 | |
| 47 | George Spencer | 1.31 | 1953-1960 | |
| 47 | LaDon Boyd | 1.31 | 1970-1973 | |
| 47 | Dennis Ribant | 1.31 | 1963-1969 | |
| 47 | Gordon Jones | 1.31 | 1955-1965 | |
| 47 | Ben F Johnson | 1.31 | 1954-1964 | |
| 47 | Harvey Haddix | 1.31 | 1948-1950 | |
| 54 | Jack Hallett | 1.32 | 1940-1949 | |
| 54 | Frank Barnes | 1.32 | 1955-1959 | |
| 54 | Monty Montgomery | 1.32 | 1970-1972 | |
| 54 | Brad Havens# | 1.32 | 1979-1980 | |
| 54 | Joe Nunn | 1.32 | 1972-1975 | |
| 59 | Arthur Grassing | 1.33 | 1976-1978 | |
| 59 | Carl Willey | 1.33 | 1955-1958 | |
| 59 | Nelson Chittum | 1.33 | 1958-1962 | |
| 59 | Dick LeMay | 1.33 | 1966-1968 | |
| 59 | Donald Gentry | 1.33 | 1972-1976 | |
| 59 | Dean Chance | 1.33 | 1961-1979 | |
| 59 | Bob Logan | 1.33 | 1940-1946 | |
| 59 | Gordon Seyfried | 1.33 | 1960-1966 | |
| 59 | Evan O'Rourke# | 1.33 | 1976-1978 | |
| 59 | Jerry Crider | 1.33 | 1966-1969 | |
| 59 | Henry Moore | 1.33 | 1974-1976 | |
| 70 | Tom Borland | 1.34 | 1958-1963 | |
| 71 | Mack Stewart | 1.35 | 1946-1948 | |
| 71 | Jerry Gomez# | 1.35 | 1972-1977 | |
| 71 | Trevor Faugno# | 1.35 | 1974-1980 | |
| 71 | Don Rudolph | 1.35 | 1957-1961 | |
| 75 | Owen Scheetz | 1.36 | 1942-1943 | |
| 75 | Rick Sawyer | 1.36 | 1970-1971 | |
| 75 | Joe Presko | 1.36 | 1955-1959 | |
| 75 | Steve Patterson | 1.36 | 1971-1977 | |
| 75 | Aurelio Monteagudo | 1.36 | 1966-1969 | |
| 75 | Bob Blaylock | 1.36 | 1958-1962 | |
| 81 | Jim Blackburn | 1.37 | 1949-1952 | |
| 81 | Don Hendrickson | 1.37 | 1940-1947 | |
| 81 | Morrie Martin | 1.37 | 1942-1960 | |
| 81 | Tommy Warren | 1.37 | 1946-1948 | |
| 81 | Chris Whitt# | 1.37 | 1974-1981 | |
| 81 | Jim Golden | 1.37 | 1958-1964 | |
| 81 | Bob Knepper# | 1.37 | 1972-1979 | |
| 81 | Dave Hoskins | 1.37 | 1954-1959 | |
| 81 | Cloyd Boyer | 1.37 | 1951-1961 | |
| 81 | Mike Paxton# | 1.37 | 1975-1980 | |
| 81 | Bert Thiel | 1.37 | 1953-1958 | |
| 81 | Al Lary | 1.37 | 1956-1961 | |
| 81 | John Gabler | 1.37 | 1957-1959 | |
| 94 | Johnny Hutchings | 1.38 | 1942-1951 | |
| 94 | Pat McGlothin | 1.38 | 1948-1953 | |
| 94 | Hal Gilson | 1.38 | 1965-1968 | |
| 94 | Marion Fricano | 1.38 | 1951-1961 | |
| 98 | Jack Spring | 1.39 | 1958-1961 | |
| 98 | Tom Deidel# | 1.39 | 1972-1974 | |
| 98 | Ron Negray | 1.39 | 1952-1958 |
