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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Alaric Hamann# | .4618 | 1972-1991 | |
| 2 | Teok-kyu On* | .4092 | 1924-1940 | |
| 3 | Donu Muruthi | .4009 | 1971-1988 | |
| 4 | Earl Willard# | .3950 | 1978-1991 | |
| 5 | Aurelio Hernández* | .3891 | 1961-1977 | |
| 6 | Gil Cameron* | .3877 | 1947-1966 | |
| 7 | Marvin McGrady# | .3844 | 1985-1991 | |
| 8 | Beckan Pendry* | .3825 | 1944-1958 | |
| 9 | Dale Jewell# | .3798 | 1986-1991 | |
| 10 | Gabriel Michaud | .3762 | 1949-1962 | |
| 11 | Marvin Gordon | .3738 | 1929-1937 | |
| 12 | Abdul-Tawwab Abdul-Muta'al | .3709 | 1970-1983 | |
| 13 | Tong Qing | .3698 | 1955-1973 | |
| 14 | Christophe Brun* | .3652 | 1933-1939 | |
| 15 | José Pérez | .3640 | 1929-1936 | |
| 16 | Andrew Scobie | .3637 | 1970-1979 | |
| 17 | Vincent Johnson* | .3591 | 1968-1984 | |
| 18 | Raúl Trevino | .3578 | 1947-1958 | |
| 19 | Wendell Lane | .3573 | 1928-1944 | |
| 20 | José Torres | .3570 | 1931-1937 | |
| 21 | Tobias Waldheim | .3567 | 1973-1986 | |
| 22 | Xavier White | .3551 | 1929-1943 | |
| 23 | Brian Smith | .3532 | 1956-1970 | |
| 24 | Erwin Close | .3515 | 1946-1954 | |
| 25 | Rafael Decilos | .3509 | 1977-1988 | |
| 26 | Dick Gilberds | .3505 | 1917-1928 | |
| 27 | Cordell McCormick | .3493 | 1939-1950 | |
| 28 | Gabriel Montoya | .3453 | 1920-1934 | |
| 29 | Judite Morra | .3450 | 1931-1949 | |
| 30 | Alfredo Botequim | .3438 | 1919-1930 | |
| 31 | Jesús López# | .3435 | 1977-1988 | |
| 32 | Lance Martin | .3432 | 1911-1918 | |
| 33 | Ted Pak | .3429 | 1911-1918 | |
| 34 | Alexei Gaidamakin | .3424 | 1970-1980 | |
| 35 | Jake Cornett | .3423 | 1974-1986 | |
| 36 | Uzmir Rehani | .3399 | 1912-1919 | |
| 37 | Min-gook Ham | .3384 | 1923-1937 | |
| 38 | Kevin Brooks | .3382 | 1967-1980 | |
| 39 | Lee Fenton | .3380 | 1973-1983 | |
| 40 | Gustaw Fialkowska | .3346 | 1973-1984 | |
| 41 | Sherwood Kirkland | .3337 | 1969-1981 | |
| 42 | Domingo Hernández | .3335 | 1940-1948 | |
| 43 | Street Shepard* | .3331 | 1933-1955 | |
| 44 | Nyles Lago# | .3298 | 1980-1991 | |
| 45 | Sigifrid Hentsch | .3291 | 1938-1946 | |
| 46 | Fernando González | .3251 | 1917-1926 | |
| 47 | Ken Manning | .3231 | 1962-1979 | |
| 48 | Carlos Hernández | .3225 | 1962-1976 | |
| 49 | Matt Wood | .3128 | 1958-1971 | |
| 50 | Tom Booker | .3096 | 1970-1980 | |
| 51 | Héctor Juárez | .3092 | 1953-1959 |
