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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Gui-fan Ou | .5242 | 1986 | |
| 2 | Perry Robinson# | .5197 | 1986 | |
| 3 | António Morales# | .4895 | 1989 | |
| 3 | Tom Holt | .4895 | 1946 | |
| 5 | Dave Ross | .4881 | 1913 | |
| 6 | Perry Dean | .4805 | 1954 | |
| 7 | Miguel Longoria | .4799 | 1912 | |
| 8 | Manuel Ramírez* | .4758 | 1946 | |
| 9 | Carlos Johnson | .4715 | 1984 | |
| 10 | Ramón Martínez | .4623 | 1956 | |
| 11 | Jeff Wagner | .4595 | 1939 | |
| 12 | Denny Jensen | .4545 | 1911 | |
| 13 | Adrian Walcott | .4526 | 1957 | |
| 14 | Michael Gardner# | .4488 | 1988 | |
| 15 | Bill Harvey | .4487 | 1962 | |
| 16 | Ta-heng Jiang# | .4472 | 1983 | |
| 17 | Rob Barnard# | .4457 | 1984 | |
| 17 | Enrico Medina | .4457 | 1955 | |
| 19 | Lian-wei Ow-Yang | .4449 | 1965 | |
| 20 | Harley Griggs | .4444 | 1951 | |
| 21 | Roberto De La Garza | .4437 | 1912 | |
| 22 | Scott Fitzgerald | .4436 | 1974 | |
| 23 | Alfredo Gonzáles | .4424 | 1957 | |
| 24 | Carlos Díaz | .4414 | 1912 | |
| 25 | Ta-heng Jiang# | .4387 | 1982 | |
| 26 | Hwui-ning Tsao | .4384 | 1925 | |
| 27 | José Recéndis | .4383 | 1968 | |
| 28 | Ramón Tańón | .4370 | 1943 | |
| 29 | Perry Robinson# | .4350 | 1985 | |
| 30 | Dan Olson | .4345 | 1974 | |
| 31 | António Canseco | .4344 | 1960 | |
| 32 | Sergio Reyes | .4343 | 1989 | |
| 33 | Ramón Colón | .4339 | 1972 | |
| 34 | Ramón Muńóz | .4333 | 1940 | |
| 35 | António Canseco | .4286 | 1959 | |
| 36 | Tom Holt | .4264 | 1947 | |
| 37 | Tom Ashley | .4240 | 1987 | |
| 38 | Daniel Garza | .4232 | 1959 | |
| 38 | Miguel Longoria | .4232 | 1913 | |
| 40 | Dana Raymond | .4220 | 1951 | |
| 40 | Mark Bursey | .4220 | 1953 | |
| 42 | Pete Rodríguez# | .4217 | 1989 | |
| 43 | Eduardo Vázquez | .4194 | 1976 | |
| 44 | Pete Hoover | .4185 | 1911 | |
| 45 | Javier De Fiesta | .4177 | 1984 | |
| 46 | Alberto Torres | .4167 | 1959 | |
| 46 | Luis Echevarría | .4167 | 1974 | |
| 48 | Kevin Keller | .4163 | 1940 | |
| 49 | Steve Fields | .4160 | 1966 | |
| 50 | Lupe Lerma | .4157 | 1911 | |
| 50 | Walt Hawkins | .4157 | 1956 | |
| 52 | Mario Barbosa# | .4155 | 1986 | |
| 53 | António Canseco | .4154 | 1961 | |
| 54 | Guillermo Peńa | .4143 | 1928 | |
| 55 | José Luna | .4139 | 1915 | |
| 56 | José Molina# | .4131 | 1980 | |
| 57 | Kevin Keller | .4128 | 1941 | |
| 58 | Ronnie Medina# | .4115 | 1986 | |
| 59 | Benny Perkins# | .4100 | 1978 | |
| 60 | Claudio Santana# | .4096 | 1985 | |
| 61 | Randy Bailey | .4089 | 1954 | |
| 62 | Zahid bin Arfan# | .4063 | 1979 | |
| 63 | Tatsuya Watanabe | .4059 | 1933 | |
| 64 | Rob Barnard# | .4024 | 1983 | |
| 65 | Jeff Picot | .4023 | 1975 | |
| 66 | Michael Rogers | .4019 | 1974 | |
| 67 | Scott Thompson# | .4015 | 1976 | |
| 68 | Patrick Higgins | .4009 | 1974 | |
| 69 | Alberto Torres | .3993 | 1957 | |
| 70 | Bill Harvey | .3992 | 1961 | |
| 71 | Guillermo Pérez | .3991 | 1952 | |
| 72 | Fernando Tores | .3968 | 1967 | |
| 73 | Walt Elliott | .3955 | 1911 | |
| 74 | Dan Hummel | .3954 | 1921 | |
| 75 | Júlio Mendoza | .3948 | 1968 | |
| 76 | Luis Rodríguez# | .3943 | 1984 | |
| 77 | Lane Alexander | .3941 | 1960 | |
| 78 | Steve Long | .3936 | 1975 | |
| 79 | Chris Kessler | .3933 | 1979 | |
| 80 | Tony Cahill | .3931 | 1934 | |
| 81 | Manny Flores# | .3913 | 1990 | |
| 82 | Lorenzo Navarro | .3884 | 1913 | |
| 82 | Claudio Santana# | .3884 | 1984 | |
| 84 | Lawrence Lewis | .3882 | 1976 | |
| 85 | Rafael Martínez | .3879 | 1977 | |
| 86 | Dusty Erwine | .3875 | 1961 | |
| 87 | Júlio Miranda | .3874 | 1968 | |
| 88 | Rob Negrón | .3870 | 1950 | |
| 89 | Eric Powell | .3863 | 1913 | |
| 90 | Sam Turner | .3852 | 1958 | |
| 91 | Ramiro Castillo | .3849 | 1958 | |
| 91 | Gabriel Henson | .3849 | 1941 | |
| 93 | Baltwin Young | .3846 | 1972 | |
| 94 | Wilson Arroyo | .3843 | 1962 | |
| 94 | Royce Morris | .3843 | 1982 | |
| 96 | Marvin Baanders | .3835 | 1929 | |
| 97 | Hisaki Ohara | .3831 | 1954 | |
| 98 | Les Watson | .3825 | 1975 | |
| 99 | Reggie Long | .3814 | 1978 | |
| 100 | Bill Goguen | .3813 | 1952 |
