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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Héctor Palomarez# | .5331 | 1982 | |
| 2 | Juan Pérez# | .5170 | 1983 | |
| 3 | Mack Morris | .5166 | 1961 | |
| 4 | Kent Rodríguez Jr.# | .5146 | 1978 | |
| 5 | Sterling Sverdloff | .5142 | 1952 | |
| 6 | Dermott Whitmore | .5088 | 1914 | |
| 7 | Arturo Colón# | .4962 | 1986 | |
| 8 | Danny Lyttle | .4934 | 1946 | |
| 9 | Carlos Helásquez | .4924 | 1962 | |
| 10 | Paco Chávez | .4737 | 1911 | |
| 11 | Júlio Soto | .4723 | 1946 | |
| 12 | Alfredo Vega | .4719 | 1976 | |
| 13 | Arthur Jones | .4646 | 1954 | |
| 14 | Jorge Díaz | .4642 | 1951 | |
| 15 | Francisco Alston# | .4620 | 1982 | |
| 16 | Ramón Mecías | .4601 | 1967 | |
| 17 | Fred Horton | .4596 | 1911 | |
| 18 | Félix Hernández# | .4587 | 1986 | |
| 19 | Anastasio Zumaya | .4582 | 1957 | |
| 20 | Kent Rodríguez Jr.# | .4567 | 1979 | |
| 21 | Jesús Vargas# | .4566 | 1989 | |
| 22 | Sidney Edwards | .4554 | 1950 | |
| 23 | Tommy Cook | .4541 | 1960 | |
| 24 | Ramón Casillas# | .4531 | 1984 | |
| 25 | Wally Mahoney | .4530 | 1952 | |
| 26 | Francisco Alston# | .4511 | 1981 | |
| 27 | Sidney Abbott | .4493 | 1963 | |
| 28 | Johnny Baker | .4486 | 1962 | |
| 28 | Butch Miller# | .4486 | 1990 | |
| 30 | Gonzalo Morín# | .4462 | 1982 | |
| 31 | Miguel Mojica | .4455 | 1942 | |
| 32 | Dharr Hakem# | .4449 | 1987 | |
| 33 | Alain Masson | .4441 | 1945 | |
| 34 | Jesús Hernández | .4403 | 1966 | |
| 35 | Travis Brown | .4389 | 1950 | |
| 36 | Jim Richardson | .4383 | 1912 | |
| 37 | John Hall | .4379 | 1954 | |
| 38 | Tamasaburo Tamura# | .4372 | 1984 | |
| 38 | Carl Case# | .4372 | 1989 | |
| 40 | Leroy Bek | .4363 | 1979 | |
| 41 | Stephen Willis | .4349 | 1912 | |
| 42 | Neal Wibberley | .4348 | 1961 | |
| 43 | Júlio Soto | .4312 | 1948 | |
| 44 | Alfredo Cruz | .4299 | 1953 | |
| 45 | Kent Rodríguez Jr.# | .4280 | 1977 | |
| 46 | Francisco Alston# | .4275 | 1980 | |
| 47 | Craig Peters | .4221 | 1911 | |
| 48 | John Tucker | .4208 | 1933 | |
| 49 | David Wilson | .4192 | 1974 | |
| 50 | Willard Newton | .4172 | 1941 | |
| 51 | Lance Kaiser | .4160 | 1941 | |
| 52 | Cal Sampson | .4156 | 1971 | |
| 53 | Carlos Flores | .4137 | 1966 | |
| 54 | Arturo Paredes | .4135 | 1982 | |
| 55 | Tony Hernández# | .4134 | 1986 | |
| 56 | Dan Morgan | .4125 | 1967 | |
| 57 | John Bird | .4121 | 1956 | |
| 58 | Mario Báez | .4113 | 1939 | |
| 59 | Armando Alvarado | .4101 | 1952 | |
| 60 | Esteban Anaya# | .4093 | 1980 | |
| 61 | Pablo Vélez | .4091 | 1951 | |
| 62 | Ronaldo Ibáńez# | .4090 | 1981 | |
| 63 | Juan Jose Salinas | .4088 | 1973 | |
| 64 | Chris O'Hooey | .4086 | 1911 | |
| 65 | Jorge Fuentes | .4084 | 1961 | |
| 66 | Júlio Soto | .4082 | 1947 | |
| 67 | Justin Snell | .4076 | 1955 | |
| 68 | Ramón Casillas# | .4074 | 1985 | |
| 69 | Travis Harvey | .4063 | 1968 | |
| 70 | Raúl Vázquez# | .4058 | 1986 | |
| 71 | Feitze Keijzer | .4053 | 1919 | |
| 72 | Tommy Cook | .4050 | 1959 | |
| 73 | Wilbert Whitaker | .4045 | 1935 | |
| 74 | Héctor Martínez | .4043 | 1974 | |
| 75 | Carlos Flores | .4036 | 1965 | |
| 76 | Pat Wall | .4027 | 1964 | |
| 77 | Will Ruíz | .4026 | 1979 | |
| 78 | Tai hoi Seema | .4017 | 1952 | |
| 79 | Román Sousa | .4000 | 1951 | |
| 79 | Aleixos Appleton | .4000 | 1969 | |
| 79 | Gary Hubbard | .4000 | 1954 | |
| 79 | Tristan Robinson | .4000 | 1912 | |
| 83 | Mitch Osborne | .3983 | 1922 | |
| 84 | Liam Burgess# | .3979 | 1982 | |
| 85 | Millard Watson | .3976 | 1966 | |
| 85 | Tai hoi Seema | .3976 | 1953 | |
| 87 | Carlos Martínez | .3966 | 1971 | |
| 88 | Myun-gu Chup | .3964 | 1962 | |
| 89 | Culley Winston | .3960 | 1938 | |
| 90 | Carolan Farquhar | .3953 | 1930 | |
| 91 | David Crawford | .3947 | 1947 | |
| 92 | Jordan Wilson | .3931 | 1913 | |
| 93 | Kian Rosbotham# | .3929 | 1974 | |
| 94 | Jimmy Thompson# | .3927 | 1989 | |
| 95 | Carolan Farquhar | .3925 | 1929 | |
| 96 | Reynaldo Ortíz# | .3922 | 1990 | |
| 97 | Chad Ramírez# | .3920 | 1974 | |
| 98 | John Mathias | .3911 | 1977 | |
| 99 | Manny Barajas# | .3900 | 1980 | |
| 100 | Francisco Moreno | .3896 | 1912 |
