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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | WHIP | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Mark Thurmond# | 0.78 | 1981 | |
| 2 | Randy Jones# | 0.80 | 1974 | |
| 3 | Benjamin Ochoa# | 0.81 | 1974 | |
| 4 | Bob Babcock | 0.84 | 1978 | |
| 5 | Richard Mahlmann# | 0.85 | 1981 | |
| 6 | Jesus Rios# | 0.89 | 1977 | |
| 6 | Gary Perritt# | 0.89 | 1978 | |
| 8 | Don Robinson# | 0.90 | 1978 | |
| 9 | Ron Schueler# | 0.92 | 1974 | |
| 10 | Bill Gilbreth | 0.94 | 1975 | |
| 10 | Frank Tanana# | 0.94 | 1974 | |
| 12 | Jim Dunegan | 0.95 | 1975 | |
| 12 | David Drumright# | 0.95 | 1977 | |
| 12 | Don Robinson# | 0.95 | 1981 | |
| 12 | Mike Maitland# | 0.95 | 1981 | |
| 16 | Gary Pickert# | 0.96 | 1980 | |
| 16 | Bill Champion | 0.96 | 1968 | |
| 16 | Steve Shields# | 0.96 | 1979 | |
| 19 | Mel Stottlemyre Sr# | 0.97 | 1964 | |
| 19 | Dale Harrington# | 0.97 | 1974 | |
| 21 | Len Barker | 0.98 | 1975 | |
| 21 | Rich Hinton | 0.98 | 1975 | |
| 21 | Thomas Boyd# | 0.98 | 1974 | |
| 21 | Donald Schroeder | 0.98 | 1970 | |
| 25 | Al Cicotte | 0.99 | 1960 | |
| 25 | Randy Lerch# | 0.99 | 1975 | |
| 27 | Enrique Martinez# | 1.00 | 1980 | |
| 27 | Diomedes Olivo | 1.00 | 1960 | |
| 27 | Kyle Monroe# | 1.00 | 1978 | |
| 27 | Paul Pelz | 1.00 | 1974 | |
| 31 | Gary Wheelock# | 1.01 | 1977 | |
| 31 | Bill Stafford | 1.01 | 1960 | |
| 31 | Jeff Reardon# | 1.01 | 1980 | |
| 31 | David Sandoval# | 1.01 | 1979 | |
| 31 | Jeff Reardon# | 1.01 | 1979 | |
| 31 | Fred Hutchinson | 1.01 | 1941 | |
| 31 | Michael Steen# | 1.01 | 1976 | |
| 38 | Timothy Juran | 1.02 | 1971 | |
| 38 | Bobby Tiefenauer | 1.02 | 1958 | |
| 38 | Bill Gilbreth | 1.02 | 1977 | |
| 38 | Phil Nastu# | 1.02 | 1979 | |
| 38 | Moose Haas# | 1.02 | 1977 | |
| 38 | Thomas Boyd# | 1.02 | 1979 | |
| 44 | Andrew Castillo# | 1.03 | 1977 | |
| 44 | Andy McGaffigan# | 1.03 | 1980 | |
| 44 | Mike Scott# | 1.03 | 1977 | |
| 44 | Tom Brennan# | 1.03 | 1978 | |
| 48 | Dave Vineyard | 1.04 | 1966 | |
| 48 | Bob Babcock | 1.04 | 1977 | |
| 48 | Mike Corkins | 1.04 | 1974 | |
| 48 | Gary Perritt# | 1.04 | 1979 | |
| 48 | John Denny# | 1.04 | 1975 | |
| 48 | Toru Hamaura# | 1.04 | 1976 | |
| 48 | Donnell Goodwin | 1.04 | 1972 | |
| 48 | Red Barrett | 1.04 | 1942 | |
| 48 | Dooley Womack | 1.04 | 1965 | |
| 48 | Terry Blitz | 1.04 | 1975 | |
| 48 | Rich Wortham# | 1.04 | 1977 | |
| 59 | Ron Reed | 1.05 | 1967 | |
| 59 | Hal White | 1.05 | 1940 | |
| 59 | Wilbur Wood# | 1.05 | 1966 | |
| 59 | Ken Crosby | 1.05 | 1974 | |
| 59 | Gary Wheelock# | 1.05 | 1978 | |
| 59 | Ernie Martinez | 1.05 | 1977 | |
| 59 | Orlando Pena | 1.05 | 1962 | |
| 59 | Gerry Schoen | 1.05 | 1972 | |
| 59 | Blake Green# | 1.05 | 1973 | |
| 68 | Buzz Capra# | 1.06 | 1970 | |
| 68 | Joe Gibbon | 1.06 | 1959 | |
| 68 | John Montague# | 1.06 | 1972 | |
| 68 | Jimmy Freeman | 1.06 | 1977 | |
| 68 | Billy Muffett | 1.06 | 1963 | |
| 68 | Monk Dubiel | 1.06 | 1943 | |
| 68 | Mike Krukow# | 1.06 | 1977 | |
| 68 | Galen Cisco | 1.06 | 1968 | |
| 76 | Ray Peters | 1.07 | 1979 | |
| 76 | Bobby Tiefenauer | 1.07 | 1963 | |
| 76 | Mark Wiley# | 1.07 | 1980 | |
| 76 | Geoff Zahn | 1.07 | 1975 | |
| 76 | Dick Kelley | 1.07 | 1966 | |
| 76 | Rene Valdes | 1.07 | 1957 | |
| 76 | Antonio Atayde# | 1.07 | 1981 | |
| 76 | Nick Strincevich | 1.07 | 1943 | |
| 76 | Thomas Boyd# | 1.07 | 1972 | |
| 85 | Ed Whitson# | 1.08 | 1979 | |
| 85 | Wally Bunker | 1.08 | 1974 | |
| 85 | Timothy Juran | 1.08 | 1972 | |
| 85 | Warren Hacker | 1.08 | 1959 | |
| 85 | Ron Schueler# | 1.08 | 1975 | |
| 85 | Ed Whitson# | 1.08 | 1978 | |
| 85 | Pat Scantlebury | 1.08 | 1955 | |
| 85 | Craig Skok | 1.08 | 1971 | |
| 85 | Jim Clancy# | 1.08 | 1979 | |
| 85 | Roy Henshaw | 1.08 | 1941 | |
| 85 | Paul Pelz | 1.08 | 1973 | |
| 85 | Jose Sevillano | 1.08 | 1974 | |
| 97 | Bobby Coombs | 1.09 | 1942 | |
| 97 | Jack Crimian | 1.09 | 1955 | |
| 97 | Jose Vasquez# | 1.09 | 1978 | |
| 97 | Ewell Blackwell | 1.09 | 1942 |
