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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | WHIP | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Aaron Wrayford | 1.18 | 1926-1929 | |
| 1 | Montrell Avellino | 1.18 | 1937-1940 | |
| 3 | Roberto Guerrero | 1.20 | 1934-1942 | |
| 4 | Paul Stevens | 1.21 | 1918-1921 | |
| 5 | Jorge Rincón | 1.22 | 1937-1940 | |
| 6 | Luis Moreno | 1.23 | 1933-1937 | |
| 7 | Aksobhya Charu# | 1.24 | 1979-1990 | |
| 8 | Daryl Wellington | 1.25 | 1964-1974 | |
| 9 | Jesse Jones | 1.27 | 1960-1969 | |
| 9 | Christophe Neveu | 1.27 | 1939-1950 | |
| 11 | Bolan Routledge | 1.33 | 1944-1954 | |
| 11 | Jaska Kirvesniemi | 1.33 | 1968-1974 | |
| 11 | Birru Kimameta# | 1.33 | 1981-1989 | |
| 14 | Juan Carbajal | 1.34 | 1941-1950 | |
| 14 | Labeeb Labib# | 1.34 | 1978-1990 | |
| 16 | Félix Estrada | 1.38 | 1937-1940 | |
| 16 | Aurelio López | 1.38 | 1941-1945 | |
| 18 | Carlos González | 1.39 | 1927-1932 | |
| 19 | Sabih Najm al Din | 1.40 | 1980-1990 | |
| 19 | Keith Tremain | 1.40 | 1959-1968 | |
| 21 | Tze-meng Zhai | 1.41 | 1932-1937 | |
| 21 | Ludovic Maestoni | 1.41 | 1924-1930 | |
| 23 | José Orosco | 1.42 | 1944-1950 | |
| 23 | José Rodríguez | 1.42 | 1947-1956 | |
| 25 | Graeme Millbank | 1.43 | 1929-1941 | |
| 26 | Adrien Castronova | 1.44 | 1927-1933 | |
| 27 | Guillaume Garreau | 1.45 | 1945-1949 | |
| 28 | Riemer Steenis | 1.46 | 1937-1940 | |
| 28 | Jaime Silva | 1.46 | 1970-1983 | |
| 28 | Luigi Tillett | 1.46 | 1918-1926 | |
| 28 | Kieran Kearsey | 1.46 | 1962-1967 | |
| 32 | Norm Peck | 1.48 | 1930-1934 | |
| 33 | Carlos Cabral | 1.49 | 1926-1929 | |
| 33 | Ulrik Meulengracht | 1.49 | 1930-1934 | |
| 35 | Leone Maldini | 1.50 | 1928-1932 | |
| 35 | Takane Gato | 1.50 | 1927-1934 | |
| 35 | Michael Bjørnå | 1.50 | 1925-1928 | |
| 38 | Máximo Lugo | 1.51 | 1950-1953 | |
| 39 | Juan Chávez | 1.53 | 1975-1980 | |
| 39 | Chris Morris | 1.53 | 1969-1988 | |
| 41 | Oskar Prugger | 1.54 | 1930-1936 | |
| 42 | Juan Carlos Cortés | 1.55 | 1931-1934 | |
| 43 | Jules Thébault | 1.56 | 1951-1962 | |
| 43 | Dieter Wurfel | 1.56 | 1980-1989 | |
| 45 | David Newby | 1.57 | 1945-1950 | |
| 45 | François Coste | 1.57 | 1941-1944 | |
| 47 | Manuel Morales | 1.58 | 1975-1980 | |
| 48 | Anton Bauer# | 1.60 | 1974-1990 | |
| 49 | Patrick Trew | 1.61 | 1941-1944 | |
| 49 | Po-sin Louis | 1.61 | 1960-1964 | |
| 49 | Pedro Flores# | 1.61 | 1982-1989 | |
| 52 | Robby McLennan | 1.62 | 1925-1929 | |
| 53 | Anastagio Grande | 1.64 | 1934-1936 | |
| 54 | José García | 1.65 | 1925-1929 | |
| 55 | Ramón Díaz | 1.80 | 1982-1990 | |
| 56 | Ignacio López# | 1.93 | 1975-1989 | |
| 57 | Tomás Hernández# | 1.97 | 1975-1988 |
