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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Kevin McAleer | .4917 | 1956 | |
| 2 | Jonathan Burgoyne# | .4669 | 1989 | |
| 3 | Arthur Andrieux | .4543 | 1969 | |
| 4 | Héctor Viera | .4494 | 1956 | |
| 5 | Greg Taylor | .4484 | 1957 | |
| 6 | Jesse Beall# | .4462 | 1990 | |
| 7 | Luis Díaz | .4450 | 1954 | |
| 8 | Jorge López | .4431 | 1964 | |
| 9 | Steve Lee | .4421 | 1954 | |
| 10 | Francisco Orellamo# | .4418 | 1986 | |
| 11 | Sergio Acevedo | .4407 | 1965 | |
| 12 | James Miller | .4393 | 1966 | |
| 13 | Ricardo Moya# | .4342 | 1985 | |
| 14 | Jorge Ramírez# | .4341 | 1989 | |
| 15 | Ricardo Moya# | .4340 | 1984 | |
| 16 | Richard Vaughn | .4313 | 1940 | |
| 16 | Sergio López# | .4313 | 1988 | |
| 18 | Miguel Morales# | .4311 | 1989 | |
| 19 | Jesús Martínez | .4279 | 1960 | |
| 20 | Juan Ibarra | .4273 | 1935 | |
| 21 | Dante López | .4264 | 1982 | |
| 22 | Francisco Díaz | .4238 | 1915 | |
| 23 | Marvin Savage | .4224 | 1968 | |
| 24 | Bastien Sanguinacco# | .4222 | 1986 | |
| 25 | Stan Joyce# | .4205 | 1987 | |
| 26 | Alonso Jefferson | .4179 | 1929 | |
| 27 | Dunlang Murdochson | .4175 | 1934 | |
| 28 | Jack Martin | .4167 | 1963 | |
| 29 | Joe Hyde | .4164 | 1958 | |
| 30 | Enrique Diéguez# | .4151 | 1987 | |
| 31 | Denzel Waddingham | .4148 | 1982 | |
| 32 | Jack Martin | .4147 | 1962 | |
| 33 | Pedro Rivera | .4132 | 1922 | |
| 34 | Terry Robbins | .4119 | 1982 | |
| 35 | Len Jackson# | .4118 | 1980 | |
| 36 | Marvin Savage | .4117 | 1967 | |
| 37 | Caden Helton | .4108 | 1965 | |
| 38 | Félix Méndez | .4102 | 1963 | |
| 39 | Joe Andrews | .4095 | 1960 | |
| 40 | Félix Vázquez | .4093 | 1950 | |
| 41 | Bob Corbin | .4087 | 1969 | |
| 42 | Craig Sanford | .4079 | 1952 | |
| 43 | Alfredo Vega | .4073 | 1990 | |
| 44 | Silvio Coppens | .4054 | 1939 | |
| 45 | Colm Longley | .4044 | 1928 | |
| 46 | Edgar Sánchez | .4041 | 1931 | |
| 47 | Fernando Rodríguez | .4029 | 1942 | |
| 48 | Glenn Lowery | .4028 | 1980 | |
| 49 | Eddie Webber | .4016 | 1961 | |
| 50 | Javier Gómez | .3997 | 1955 | |
| 51 | Lawrence Hudson | .3994 | 1958 | |
| 52 | Bobby Green | .3993 | 1915 | |
| 53 | Christian Cook# | .3986 | 1976 | |
| 54 | Sergio Acevedo | .3985 | 1964 | |
| 55 | Matt Logan | .3975 | 1979 | |
| 56 | Francisco Díaz | .3974 | 1914 | |
| 57 | Warren Bertrand | .3947 | 1976 | |
| 58 | Jesús Martínez | .3936 | 1961 | |
| 59 | José Romero | .3935 | 1951 | |
| 60 | Pepe García | .3926 | 1979 | |
| 61 | Zachary King | .3920 | 1911 | |
| 62 | Fernando Quiñonez | .3914 | 1959 | |
| 63 | Alonso Álvarez | .3906 | 1917 | |
| 63 | Dan Cunningham | .3906 | 1914 | |
| 65 | Dante López | .3905 | 1983 | |
| 66 | Eddie Webber | .3897 | 1963 | |
| 67 | Alfredo Hidalgo | .3894 | 1933 | |
| 68 | John Andrés# | .3889 | 1984 | |
| 69 | Héctor Viera | .3883 | 1951 | |
| 70 | Fred Green | .3881 | 1931 | |
| 71 | Roberto Rea# | .3877 | 1983 | |
| 72 | Colm Longley | .3872 | 1927 | |
| 73 | Colm Longley | .3865 | 1925 | |
| 74 | Ismael Gamboa | .3853 | 1951 | |
| 75 | Enrico Ortega | .3852 | 1934 | |
| 76 | Joe Garrett# | .3843 | 1984 | |
| 77 | Saula Marron | .3838 | 1928 | |
| 78 | David Moore | .3829 | 1916 | |
| 78 | Steve Hollins | .3829 | 1966 | |
| 80 | Aurelio Valderrama | .3822 | 1964 | |
| 81 | Sergio Acevedo | .3820 | 1963 | |
| 82 | Caden Helton | .3817 | 1964 | |
| 82 | Silvio Coppens | .3817 | 1938 | |
| 84 | Bob Corbin | .3799 | 1967 | |
| 85 | Sergio Berrios | .3795 | 1939 | |
| 86 | Logan Metcalf | .3788 | 1959 | |
| 87 | Félix Vázquez | .3787 | 1951 | |
| 88 | Brian Green | .3780 | 1967 | |
| 89 | Craig Brady | .3777 | 1928 | |
| 90 | Michael Hobby | .3773 | 1912 | |
| 91 | Craig Mcintyre | .3768 | 1937 | |
| 92 | Colm Longley | .3759 | 1926 | |
| 93 | Tyrone Abbott | .3755 | 1959 | |
| 93 | Dave López# | .3755 | 1987 | |
| 95 | Forrest Pollock | .3753 | 1980 | |
| 96 | Brian Lovell | .3750 | 1947 | |
| 97 | Grant Jumper | .3747 | 1985 | |
| 98 | Chad Black | .3732 | 1966 | |
| 99 | Cooper Humphrey | .3724 | 1983 | |
| 99 | Pablo Palmeiro | .3724 | 1920 |
