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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Chris Massey | .5466 | 1952 | |
| 2 | Jorge Ramírez# | .5329 | 1988 | |
| 3 | Luis Rosales | .5204 | 1942 | |
| 4 | Fabroni Aguzzi | .5142 | 1954 | |
| 5 | Chris Massey | .5017 | 1953 | |
| 6 | Fernando Méndez | .5000 | 1956 | |
| 7 | Mike Rúbio | .4985 | 1954 | |
| 8 | Juan García# | .4979 | 1989 | |
| 9 | Phil Carter | .4906 | 1985 | |
| 10 | Joseph Nicholson | .4888 | 1951 | |
| 11 | John Miller | .4854 | 1968 | |
| 12 | Herman Hancock | .4847 | 1952 | |
| 13 | José Carrillo# | .4791 | 1982 | |
| 14 | Miguel López# | .4748 | 1986 | |
| 15 | Randall Watson | .4730 | 1963 | |
| 16 | King Warren | .4667 | 1986 | |
| 17 | Román Padilla# | .4661 | 1990 | |
| 18 | Santiago Herrera | .4658 | 1985 | |
| 19 | Francisco Orellamo# | .4633 | 1984 | |
| 20 | Francisco Orellamo# | .4605 | 1985 | |
| 21 | Will Docking | .4593 | 1973 | |
| 22 | Carlos López# | .4589 | 1986 | |
| 22 | Jack Martin | .4589 | 1961 | |
| 24 | Luis Vargas | .4587 | 1962 | |
| 25 | Mu'ammar Zahor# | .4545 | 1983 | |
| 26 | Cristián Trujillo | .4482 | 1951 | |
| 27 | Chris Mathews | .4481 | 1913 | |
| 28 | Greg Owens | .4474 | 1933 | |
| 29 | Milo MacPherson# | .4469 | 1982 | |
| 30 | George Goodwin | .4464 | 1976 | |
| 31 | Arend Groenevelt | .4456 | 1966 | |
| 32 | Chris Mathews | .4420 | 1914 | |
| 33 | Joe Taylor | .4413 | 1930 | |
| 34 | Mike Young | .4392 | 1912 | |
| 35 | Daniel Garegnani | .4372 | 1953 | |
| 36 | Bob Anderson | .4370 | 1973 | |
| 37 | Malcolm Paige | .4365 | 1962 | |
| 38 | Ricardo Guerrero# | .4364 | 1988 | |
| 39 | Vincente García# | .4357 | 1990 | |
| 40 | Jorge Relgio | .4351 | 1965 | |
| 41 | Paul Richardson | .4350 | 1972 | |
| 42 | Javier Negrete | .4332 | 1962 | |
| 43 | Ron Jones | .4328 | 1959 | |
| 44 | Jon Collins# | .4324 | 1989 | |
| 45 | Forest Neal | .4321 | 1915 | |
| 46 | Gunner Ashby | .4320 | 1980 | |
| 47 | Stuart Hutt# | .4312 | 1989 | |
| 48 | Bob Corbin | .4310 | 1964 | |
| 49 | Ron Marks | .4308 | 1959 | |
| 50 | Takane Miura | .4303 | 1976 | |
| 51 | Will Shafer | .4300 | 1955 | |
| 52 | Joseph Nicholson | .4296 | 1950 | |
| 53 | Emílio Ojeda | .4286 | 1960 | |
| 54 | Ron Marks | .4270 | 1960 | |
| 55 | Justin Bennett | .4268 | 1944 | |
| 56 | Joe Andrews | .4267 | 1958 | |
| 57 | Will Ruíz | .4265 | 1978 | |
| 58 | Wilson Gwyther | .4247 | 1967 | |
| 59 | Paul Kelley | .4245 | 1912 | |
| 60 | Luis Quintero | .4240 | 1969 | |
| 61 | Luis Hernández | .4228 | 1952 | |
| 62 | Rubén Vega | .4205 | 1969 | |
| 63 | Scott Smith | .4204 | 1954 | |
| 64 | Juan Mora# | .4203 | 1990 | |
| 65 | Jerry Olson# | .4198 | 1984 | |
| 66 | Trevor Ruffin | .4196 | 1966 | |
| 67 | Charlie Reid# | .4180 | 1987 | |
| 68 | Gabriel Bowles# | .4179 | 1989 | |
| 69 | Joe Stevens | .4163 | 1973 | |
| 70 | Henry Sullivan# | .4160 | 1980 | |
| 71 | Lorenzo Barrera | .4149 | 1912 | |
| 72 | Juan Pérez | .4145 | 1945 | |
| 73 | Jesús Torres | .4130 | 1924 | |
| 74 | Luis Vargas | .4128 | 1961 | |
| 75 | Santiago Herrera | .4113 | 1976 | |
| 76 | Shi-fu Ruan | .4110 | 1943 | |
| 77 | Christian Wilson | .4106 | 1965 | |
| 78 | Ben Schneider# | .4104 | 1988 | |
| 79 | Stan Watts | .4098 | 1946 | |
| 80 | Ashwin Peper# | .4097 | 1981 | |
| 81 | Guonçalle Vilo# | .4082 | 1983 | |
| 82 | Bryce Gill | .4057 | 1961 | |
| 83 | Gaetan Fei | .4056 | 1961 | |
| 84 | Jon Collins# | .4043 | 1988 | |
| 85 | Miguel López# | .4037 | 1987 | |
| 86 | Roberto Mateo | .4036 | 1979 | |
| 87 | Don Harper | .4034 | 1965 | |
| 88 | Alfredo Romero | .4016 | 1981 | |
| 89 | David Murray# | .4014 | 1986 | |
| 89 | Gonzalo Mora | .4014 | 1929 | |
| 91 | Richard Hebert | .4009 | 1971 | |
| 92 | Ernest Snow | .4007 | 1975 | |
| 93 | Mito Yokoyama | .4000 | 1911 | |
| 93 | Ricardo Moya# | .4000 | 1982 | |
| 95 | Lorenzo Vega | .3993 | 1986 | |
| 96 | Luis Ramos# | .3985 | 1985 | |
| 97 | Nelson Colón | .3976 | 1942 | |
| 98 | Ernesto Gámez | .3974 | 1975 | |
| 98 | Ken Gardner | .3974 | 1974 | |
| 100 | Masayoshi Ageda | .3967 | 1986 |
