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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Bernardo Carrión | .4721 | 1982 | |
| 2 | Chris Mullins | .4681 | 1966 | |
| 3 | Alfonso González | .4629 | 1923 | |
| 4 | Gene Davis | .4510 | 1956 | |
| 5 | Jason Fowler | .4449 | 1959 | |
| 6 | James Miller | .4397 | 1965 | |
| 7 | Ray Moran | .4385 | 1957 | |
| 8 | Alfonso Sánchez# | .4377 | 1987 | |
| 9 | Martin Jordan | .4376 | 1968 | |
| 10 | Clint Dodd | .4368 | 1912 | |
| 11 | Gene Davis | .4356 | 1955 | |
| 12 | Ron von Lahr | .4328 | 1969 | |
| 13 | Frank Mason | .4324 | 1947 | |
| 14 | Luis Gil# | .4308 | 1985 | |
| 14 | Paul Owens | .4308 | 1953 | |
| 16 | Juan Jose Flores | .4307 | 1947 | |
| 17 | John King# | .4297 | 1983 | |
| 18 | Jason O'Mackesey | .4286 | 1959 | |
| 19 | Robinson Moreno | .4283 | 1914 | |
| 19 | Mark Collins | .4283 | 1957 | |
| 21 | Gary Nelson | .4270 | 1967 | |
| 22 | John King# | .4215 | 1985 | |
| 23 | Khayyat bin Khalid | .4211 | 1982 | |
| 24 | Ron Williams | .4208 | 1911 | |
| 25 | John King# | .4196 | 1984 | |
| 26 | Jason Fowler | .4195 | 1958 | |
| 27 | Jim Perkins | .4177 | 1961 | |
| 28 | Vince Dunne | .4155 | 1949 | |
| 28 | Pedro Medrano | .4155 | 1954 | |
| 30 | Pedro Gallegos | .4153 | 1966 | |
| 31 | Darge Mwendapole | .4150 | 1951 | |
| 32 | Richard Hebert | .4139 | 1972 | |
| 33 | Nathan Martin | .4136 | 1974 | |
| 34 | Pedro Reyes | .4134 | 1975 | |
| 35 | Mike Payne# | .4104 | 1984 | |
| 36 | Jim Perkins | .4091 | 1959 | |
| 37 | Bo Buchanan# | .4076 | 1976 | |
| 38 | Ramón López | .4058 | 1953 | |
| 39 | Aaron Metherall | .4056 | 1989 | |
| 40 | Sean Descamps | .4024 | 1951 | |
| 41 | Juan García | .4015 | 1978 | |
| 42 | Nasih Sariyah | .4010 | 1975 | |
| 43 | Connor Cochran | .4009 | 1963 | |
| 44 | Mike Kline | .4007 | 1946 | |
| 45 | Bailey Watkinson# | .4000 | 1985 | |
| 46 | José Cruz | .3985 | 1921 | |
| 47 | Rob Berry | .3983 | 1936 | |
| 48 | Justin Calderón | .3982 | 1982 | |
| 49 | Davis Gray# | .3969 | 1989 | |
| 50 | Mario Santos | .3964 | 1975 | |
| 50 | Jason Roux | .3964 | 1936 | |
| 52 | Jorge Mendoza# | .3958 | 1983 | |
| 53 | Tokuma Sugimoto | .3951 | 1921 | |
| 54 | Leonilde Bach | .3942 | 1978 | |
| 55 | Quintino Moroni | .3933 | 1965 | |
| 56 | Jeff Thomas | .3929 | 1964 | |
| 57 | José Alvarado# | .3927 | 1984 | |
| 58 | Keith Robinson | .3923 | 1951 | |
| 59 | Alberto Cervantes# | .3922 | 1990 | |
| 60 | Gary Nelson | .3917 | 1965 | |
| 61 | Bill Hales | .3914 | 1915 | |
| 62 | Sean McCoy | .3912 | 1928 | |
| 63 | Carlos Torres | .3907 | 1941 | |
| 64 | Anthony Williams | .3895 | 1912 | |
| 65 | Quintino Moroni | .3886 | 1964 | |
| 66 | Jason O'Mackesey | .3879 | 1958 | |
| 66 | Jorge López | .3879 | 1950 | |
| 68 | Luis Castro# | .3876 | 1986 | |
| 69 | Benedicto Castillo | .3864 | 1983 | |
| 70 | Nolan McCluskey# | .3859 | 1986 | |
| 71 | Zach Rice | .3854 | 1980 | |
| 72 | Tomokazu Shiroi | .3853 | 1952 | |
| 73 | Alex Shepherd | .3852 | 1967 | |
| 74 | Kyle Craft | .3850 | 1964 | |
| 75 | Alex Shepherd | .3834 | 1968 | |
| 76 | Juan Sosa | .3825 | 1964 | |
| 77 | Juan García | .3820 | 1979 | |
| 77 | Carlos Gutiérrez | .3820 | 1953 | |
| 79 | Arturo Longoria | .3808 | 1975 | |
| 80 | Arthur Gray# | .3803 | 1986 | |
| 81 | Rusty Simon | .3802 | 1962 | |
| 81 | Juan Herrera | .3802 | 1927 | |
| 83 | Bailey Watkinson# | .3797 | 1984 | |
| 84 | Lowie Jacobs | .3791 | 1926 | |
| 85 | Jim Perkins | .3789 | 1960 | |
| 86 | Jorge Mendoza# | .3787 | 1982 | |
| 87 | Mario Morales | .3786 | 1928 | |
| 88 | Yuki Matsushita | .3775 | 1961 | |
| 89 | Héctor López | .3770 | 1935 | |
| 90 | Justin Finley | .3762 | 1949 | |
| 90 | Cristián Andrés | .3762 | 1937 | |
| 92 | Alex Shepherd | .3756 | 1969 | |
| 93 | Arthur Gray# | .3748 | 1987 | |
| 94 | Nick Little | .3735 | 1935 | |
| 94 | Brad O'Cawley | .3735 | 1966 | |
| 96 | J.R. Lewis | .3730 | 1950 | |
| 97 | Gil Robertson | .3729 | 1971 | |
| 98 | Kevin Hansen | .3716 | 1946 | |
| 99 | Mark Kerr | .3709 | 1962 | |
| 100 | Adrián Romero | .3696 | 1958 |
