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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Ambrose Foust | .4698 | 1985 | |
| 2 | Mitchell Walker | .4434 | 1982 | |
| 3 | Armando Rodríguez | .4391 | 1952 | |
| 4 | Travis James# | .4370 | 1984 | |
| 5 | R.J. Jones | .4361 | 1964 | |
| 6 | Armando Rodríguez | .4280 | 1951 | |
| 7 | Juan Hernández# | .4251 | 1984 | |
| 8 | Gerard Fry | .4228 | 1951 | |
| 9 | Francisco Cedeño | .4191 | 1982 | |
| 10 | Carl de Blooys | .4142 | 1968 | |
| 11 | Ramón López | .4090 | 1958 | |
| 12 | Carl de Blooys | .4077 | 1962 | |
| 13 | Tommy Jensen# | .4067 | 1983 | |
| 14 | Jorge Maldonado | .4051 | 1960 | |
| 15 | Pedro Calderón | .4040 | 1962 | |
| 16 | Yasutake Tomita | .4037 | 1978 | |
| 17 | Bei Shui# | .4035 | 1983 | |
| 18 | Pedro Ramírez# | .4000 | 1986 | |
| 19 | Tim Lucas# | .3986 | 1988 | |
| 20 | Cisco Medina# | .3976 | 1987 | |
| 21 | Loren Walters | .3973 | 1983 | |
| 22 | Ahmed bin Seif | .3963 | 1985 | |
| 23 | Mitchell Walker | .3922 | 1979 | |
| 24 | Reynaldo Quezada | .3906 | 1975 | |
| 25 | Jorge Maldonado | .3900 | 1961 | |
| 26 | Bill Caldwell | .3897 | 1964 | |
| 27 | Chris Whitehead | .3895 | 1936 | |
| 28 | Félix Márquez | .3872 | 1949 | |
| 29 | Doug Hollingsworth | .3860 | 1946 | |
| 30 | Corey Abell | .3855 | 1936 | |
| 31 | Bei Shui# | .3842 | 1982 | |
| 32 | Warren Simpson# | .3841 | 1985 | |
| 33 | Lee King | .3840 | 1983 | |
| 34 | Juan Serrano | .3837 | 1913 | |
| 35 | Larry Armstrong | .3832 | 1917 | |
| 36 | Wilson Pergrino | .3829 | 1945 | |
| 37 | Kazuhiko Watanabe | .3804 | 1921 | |
| 38 | Roberto Cantú | .3796 | 1959 | |
| 39 | Cisco Medina# | .3794 | 1990 | |
| 40 | Juan Hernández# | .3789 | 1988 | |
| 41 | Gui-fan Tien | .3786 | 1953 | |
| 42 | Glen Boyle | .3780 | 1966 | |
| 43 | Andrés Deleón | .3778 | 1947 | |
| 44 | R.J. Jones | .3776 | 1963 | |
| 45 | Er Fen | .3770 | 1958 | |
| 46 | Colin Harris | .3761 | 1964 | |
| 47 | Jorge Maldonado | .3759 | 1959 | |
| 48 | Bill McTavish | .3748 | 1948 | |
| 49 | Mark Marsh | .3742 | 1962 | |
| 50 | Ambrose Foust | .3736 | 1979 | |
| 51 | Frédéric Simonnet | .3731 | 1912 | |
| 52 | Javier Díaz | .3728 | 1947 | |
| 53 | Jorge Andalón | .3726 | 1947 | |
| 54 | Horiuchi Uchiyama | .3722 | 1975 | |
| 55 | Donohue McTaggart | .3719 | 1944 | |
| 55 | Chris Hobbs | .3719 | 1916 | |
| 55 | Bob Reynolds | .3719 | 1985 | |
| 58 | Lawrence Gustafson# | .3698 | 1984 | |
| 59 | Matt Byrd | .3696 | 1914 | |
| 60 | Diego Torres# | .3695 | 1987 | |
| 61 | Júlio Martínez# | .3693 | 1990 | |
| 62 | Mitchell Walker | .3685 | 1984 | |
| 63 | Nelson Garza | .3683 | 1959 | |
| 64 | Wallace Kramer# | .3682 | 1990 | |
| 64 | Juan Rodríguez | .3682 | 1934 | |
| 66 | Ray Parker# | .3677 | 1979 | |
| 67 | Armando Cardona# | .3674 | 1982 | |
| 68 | Jeff Keys# | .3671 | 1984 | |
| 69 | Manuel Rivera | .3666 | 1939 | |
| 70 | Gregorio Pierotti | .3662 | 1961 | |
| 71 | Derek Dupree | .3660 | 1977 | |
| 72 | Francisco Castro | .3644 | 1958 | |
| 73 | Kazuma Iwata | .3641 | 1940 | |
| 73 | Roger Martin | .3641 | 1966 | |
| 75 | Eduardo Hernández# | .3638 | 1988 | |
| 76 | António Ramírez | .3616 | 1938 | |
| 76 | Chris Blevins | .3616 | 1967 | |
| 78 | Bei Shui# | .3613 | 1988 | |
| 78 | José Peña | .3613 | 1949 | |
| 80 | Jeremy Knight | .3611 | 1956 | |
| 81 | Brian Thomas | .3610 | 1917 | |
| 82 | Bill Fullerton | .3599 | 1943 | |
| 83 | Ed Walters | .3582 | 1969 | |
| 83 | Francisco Cedeño | .3582 | 1977 | |
| 83 | Ambrose Foust | .3582 | 1980 | |
| 86 | Ron Swallow# | .3579 | 1977 | |
| 87 | Cristián Andrés | .3571 | 1941 | |
| 88 | Daniel van der Bas | .3570 | 1922 | |
| 89 | Michael Crawford | .3569 | 1928 | |
| 90 | Armando Cardona# | .3558 | 1988 | |
| 91 | Minoru Maekawa | .3557 | 1937 | |
| 92 | Jesús Torres | .3543 | 1965 | |
| 93 | Len Fanner# | .3538 | 1988 | |
| 93 | Daniel Gonzáles# | .3538 | 1982 | |
| 95 | Charles Abercrombie | .3521 | 1980 | |
| 96 | António Vázquez | .3516 | 1964 | |
| 96 | Horiuchi Uchiyama | .3516 | 1977 | |
| 98 | Ray Parker# | .3513 | 1978 | |
| 99 | R.J. Jones | .3511 | 1962 | |
| 100 | Kazuhiko Watanabe | .3507 | 1922 |
