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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OSLG | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Killian McKieson | .2930 | 1936-1941 | |
| 2 | Sam George | .3336 | 1922-1925 | |
| 3 | Mario Valenzuela | .3478 | 1926-1928 | |
| 4 | Ken Coker | .3565 | 1930-1938 | |
| 5 | Doug Blackwell | .3607 | 1962-1975 | |
| 6 | Christopher Perrin | .3668 | 1936-1941 | |
| 7 | Kent Wilson | .3734 | 1926-1929 | |
| 8 | Jesús Béltre | .3756 | 1916-1920 | |
| 9 | Yannick Goor | .3761 | 1942-1945 | |
| 10 | Ryuichi Honda | .3782 | 1959-1963 | |
| 11 | Pat Chandler | .3798 | 1940-1950 | |
| 12 | Daniel Harriman | .3863 | 1936-1941 | |
| 13 | Manuel Pujols | .3880 | 1944-1950 | |
| 14 | Jesús Rivero | .3898 | 1958-1971 | |
| 15 | Tony Barrios | .3922 | 1945-1949 | |
| 16 | Wayne Glendenning | .3964 | 1976-1980 | |
| 17 | Tony Díaz | .4037 | 1911-1920 | |
| 18 | Cody Johnston | .4076 | 1965-1970 | |
| 19 | Andre Robinson | .4077 | 1971-1984 | |
| 20 | Phil Stout | .4107 | 1938-1941 | |
| 21 | John Flowers | .4108 | 1915-1918 | |
| 22 | Jason Garrett# | .4113 | 1985-1990 | |
| 23 | José Trujillo | .4165 | 1928-1932 | |
| 24 | Bryan Humble | .4171 | 1921-1928 | |
| 25 | José Fuentes | .4180 | 1975-1980 | |
| 26 | Patrick Brown | .4200 | 1925-1928 | |
| 27 | António Pérez | .4201 | 1920-1923 | |
| 28 | Francisco Cruz | .4266 | 1962-1970 | |
| 29 | Jorge Pińa | .4289 | 1978-1981 | |
| 30 | Cipriano Castro | .4307 | 1977-1986 | |
| 31 | Fernando Morales | .4336 | 1945-1958 | |
| 32 | Andy Thornton | .4337 | 1960-1965 | |
| 33 | Jiro Watanabe | .4348 | 1975-1985 | |
| 34 | Wilbur Patterson | .4356 | 1948-1959 | |
| 35 | Juan Sánchez | .4363 | 1957-1961 | |
| 36 | Itri Olu | .4429 | 1981-1990 | |
| 37 | Toby Pugsley | .4444 | 1948-1963 | |
| 38 | Tony Segura | .4471 | 1958-1963 | |
| 39 | Jesús Vega | .4595 | 1953-1957 | |
| 40 | Brad Ramírez | .4598 | 1968-1976 | |
| 41 | James Lapthorne | .4606 | 1975-1990 | |
| 42 | Ryan Verrall | .4610 | 1920-1924 | |
| 43 | Salvador Muńóz | .4648 | 1937-1940 | |
| 44 | Esteban Toromoreno# | .4691 | 1978-1989 | |
| 45 | António García | .4745 | 1958-1971 | |
| 46 | Toby Kelley | .4872 | 1949-1954 |
