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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 | Colby Greene* | .4585 | 1911-1926 | |
| 3 | Vasily Jarovtsev | .4336 | 1968-1980 | |
| 4 | Víctor Ramírez* | .4253 | 1944-1960 | |
| 5 | Fred Roberts* | .4196 | 1919-1932 | |
| 6 | Javier Figueroa | .4125 | 1942-1958 | |
| 7 | Teok-kyu On* | .4095 | 1924-1940 | |
| 8 | Mike Davis | .4059 | 1912-1924 | |
| 9 | Ross Pavey | .4030 | 1915-1933 | |
| 10 | Shigemasa Sato* | .4013 | 1926-1943 | |
| 11 | Donu Muruthi | .4009 | 1971-1988 | |
| 12 | Rafael Martínez* | .3990 | 1927-1943 | |
| 13 | Ricardo Gómez# | .3980 | 1971-1990 | |
| 14 | Pantalian Torrinha | .3974 | 1916-1925 | |
| 15 | Wayne Cramphorn | .3969 | 1927-1933 | |
| 16 | Jorge Rodríguez | .3965 | 1919-1928 | |
| 17 | Tamasaburo Abe | .3963 | 1950-1961 | |
| 18 | Manuel Ramírez* | .3945 | 1948-1966 | |
| 19 | Francisco Vargas# | .3939 | 1979-1991 | |
| 20 | Billy Chuter* | .3937 | 1915-1935 | |
| 21 | Diego Barrios# | .3922 | 1980-1991 | |
| 21 | Siu-chung Hung | .3922 | 1933-1939 | |
| 23 | Raúl Escobar | .3910 | 1961-1974 | |
| 24 | Bill Collier* | .3902 | 1926-1942 | |
| 25 | Erik Melton | .3894 | 1944-1953 | |
| 26 | Aurelio Hernández* | .3889 | 1961-1977 | |
| 27 | Edgardo Souza# | .3884 | 1986-1991 | |
| 28 | Carl Davis | .3880 | 1949-1958 | |
| 29 | Gil Cameron* | .3868 | 1947-1966 | |
| 30 | Beckan Pendry* | .3861 | 1944-1958 | |
| 31 | Jeff Picot | .3860 | 1980-1990 | |
| 32 | Ed Stewart | .3851 | 1924-1941 | |
| 33 | Teferi Amar* | .3848 | 1970-1980 | |
| 34 | Marvin McGrady# | .3844 | 1985-1991 | |
| 35 | Pepe Fuentes* | .3843 | 1922-1941 | |
| 36 | Jeremy Wilson | .3839 | 1936-1947 | |
| 37 | Earl Willard# | .3833 | 1978-1991 | |
| 37 | Carlos Morán | .3833 | 1934-1941 | |
| 39 | António Ramírez | .3829 | 1939-1951 | |
| 40 | Mitch Davenport# | .3827 | 1979-1988 | |
| 41 | Mathias Albertoni* | .3824 | 1953-1969 | |
| 42 | Tyco Flats* | .3822 | 1964-1986 | |
| 43 | Howard Wagner | .3815 | 1935-1942 | |
| 44 | Nick Edwards | .3808 | 1976-1986 | |
| 45 | Dale Jewell# | .3798 | 1986-1991 | |
| 46 | Steve England | .3790 | 1911-1916 | |
| 47 | Loy Fasciano | .3784 | 1923-1931 | |
| 47 | Mateo Ottens | .3784 | 1973-1986 | |
| 49 | Mike Nelson | .3781 | 1911-1922 | |
| 50 | Abdul-Tawwab Abdul-Muta'al | .3771 | 1970-1983 | |
| 51 | Gabriel Michaud | .3764 | 1949-1962 | |
| 51 | Vicente Martínez | .3764 | 1962-1972 | |
| 53 | Shane Bradley | .3753 | 1926-1936 | |
| 54 | Frederick Bradshaw | .3752 | 1911-1918 | |
| 55 | Tim Hill | .3742 | 1950-1960 | |
| 56 | Chuck Watson | .3740 | 1966-1979 | |
| 57 | Ayuba Njama# | .3739 | 1973-1991 | |
| 58 | Herb Jackson* | .3734 | 1911-1927 | |
| 59 | Anastagio Colombo | .3727 | 1948-1956 | |
| 59 | Yancy Jarl* | .3727 | 1919-1935 | |
| 61 | Charlemagne Freeman* | .3718 | 1934-1955 | |
| 61 | Gideon Clews | .3718 | 1921-1931 | |
| 63 | Marvin Gordon | .3716 | 1929-1937 | |
| 64 | Félix Salazar | .3712 | 1934-1943 | |
| 65 | Theodor Frenkiel | .3706 | 1945-1955 | |
| 66 | Carlos Barrera | .3700 | 1945-1955 | |
| 67 | Bartolo Rosado | .3699 | 1969-1984 | |
| 68 | Tong Qing | .3698 | 1955-1973 | |
| 69 | Carlos Helásquez | .3695 | 1964-1983 | |
| 69 | Norbert Jones* | .3695 | 1946-1953 | |
| 71 | Ed Smith# | .3694 | 1984-1991 | |
| 72 | Tonny van der Ban | .3675 | 1933-1942 | |
| 73 | José Pérez | .3671 | 1929-1936 | |
| 74 | José Bonilla | .3665 | 1930-1936 | |
| 74 | Francisco González* | .3665 | 1920-1940 | |
| 76 | Tony Daley | .3657 | 1961-1978 | |
| 77 | Ari Frece | .3654 | 1932-1952 | |
| 78 | Christophe Brun* | .3652 | 1933-1939 | |
| 79 | Eiske Jiménez | .3651 | 1972-1987 | |
| 80 | Iestyn Salthouse | .3650 | 1914-1925 | |
| 80 | Edward Cruz# | .3650 | 1976-1990 | |
| 82 | Luis Tirado | .3646 | 1922-1931 | |
| 83 | Derek Conner | .3645 | 1919-1934 | |
| 84 | Linwood Flores | .3644 | 1922-1934 | |
| 85 | Salvador Villalove | .3637 | 1950-1959 | |
| 85 | Andrew Scobie | .3637 | 1970-1979 | |
| 87 | Zak Wilson# | .3634 | 1979-1991 | |
| 88 | Tim Gallegos | .3632 | 1948-1964 | |
| 89 | Juan Serrano | .3627 | 1914-1926 | |
| 90 | Foster Carter | .3625 | 1946-1953 | |
| 91 | Paul Jones | .3624 | 1968-1987 | |
| 91 | Ed Bowie | .3624 | 1922-1929 | |
| 93 | Mauro Cardona# | .3620 | 1973-1991 | |
| 94 | Wendell Lane | .3612 | 1928-1944 | |
| 94 | Pedro Pérez | .3612 | 1935-1948 | |
| 96 | Héctor Cortés | .3607 | 1916-1928 | |
| 96 | Russ Pederson | .3607 | 1930-1938 | |
| 98 | Ramón Serrano | .3606 | 1911-1921 | |
| 99 | Brenden Howson | .3602 | 1964-1970 | |
| 100 | Kauto Talus | .3601 | 1964-1980 |
