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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | António González* | .4924 | 1983 | |
| 2 | Manny Sanahia | .4695 | 1994 | |
| 3 | Paul O'Neill* | .4677 | 1960 | |
| 4 | Milan Alarcon | .4651 | 1964 | |
| 5 | António González* | .4605 | 1988 | |
| 6 | António González* | .4564 | 1984 | |
| 7 | Abraham Chee* | .4549 | 1959 | |
| 8 | Manny Sanahia | .4547 | 1990 | |
| 9 | Peter Walter | .4535 | 1990 | |
| 10 | Wilson Gonzáles* | .4503 | 1984 | |
| 11 | Ernesto Álvarez | .4483 | 1998 | |
| 12 | Milan Alarcon | .4479 | 1963 | |
| 13 | Eduardo Rodríguez | .4478 | 1991 | |
| 14 | Dave J | .4416 | 1987 | |
| 15 | Fred Atwood | .4403 | 1958 | |
| 16 | Fred Atwood | .4401 | 1965 | |
| 17 | António González* | .4397 | 1987 | |
| 18 | Fred Atwood | .4388 | 1967 | |
| 19 | Jack Bradford | .4380 | 1979 | |
| 20 | Michael Dade | .4378 | 1972 | |
| 21 | Fred Atwood | .4375 | 1964 | |
| 22 | Manny Rojas | .4368 | 1971 | |
| 23 | Jorge Galindo | .4359 | 1973 | |
| 23 | Peter Walter | .4359 | 1989 | |
| 25 | Wilson Gonzáles* | .4351 | 1982 | |
| 26 | Lonnie Morgan | .4328 | 1990 | |
| 26 | Dave Kirby | .4328 | 1968 | |
| 28 | Fred Atwood | .4315 | 1962 | |
| 29 | John Evans | .4304 | 1972 | |
| 30 | Tom Schaefer* | .4299 | 1981 | |
| 31 | Fred Atwood | .4296 | 1966 | |
| 32 | Jared Schneider | .4295 | 1985 | |
| 33 | Abraham Chee* | .4292 | 1963 | |
| 34 | Tommy Cochrane* | .4286 | 1980 | |
| 34 | Tom Schaefer* | .4286 | 1982 | |
| 36 | Joseph Sommers | .4278 | 1963 | |
| 37 | Fred Atwood | .4277 | 1961 | |
| 37 | Ronald Anderson | .4277 | 1972 | |
| 39 | Jimmy Watkins | .4275 | 1977 | |
| 40 | Tommy Cochrane* | .4273 | 1979 | |
| 41 | Timothy Johnson | .4264 | 1957 | |
| 41 | Don Carter | .4264 | 1977 | |
| 43 | John Arteaga | .4259 | 1959 | |
| 44 | Joe Dunn | .4257 | 1972 | |
| 45 | Esteban López# | .4255 | 2012 | |
| 46 | Jared Schneider | .4253 | 1986 | |
| 47 | Tommy Cochrane* | .4252 | 1978 | |
| 48 | Esteban López# | .4250 | 2010 | |
| 49 | António González* | .4247 | 1985 | |
| 50 | Glenn Graham | .4237 | 1979 | |
| 51 | Michael Dade | .4235 | 1963 | |
| 52 | Wilson Gonzáles* | .4233 | 1992 | |
| 52 | Peter Sánchez# | .4233 | 2011 | |
| 52 | Ángel Vásquez | .4233 | 1976 | |
| 55 | Manuel Garza# | .4231 | 2010 | |
| 56 | Hunter Peck | .4226 | 1981 | |
| 57 | John Jones | .4223 | 1971 | |
| 58 | Tommy Cochrane* | .4216 | 1986 | |
| 59 | Paul Belcher | .4211 | 1998 | |
| 59 | Abraham Chee* | .4211 | 1958 | |
| 61 | Robert Chacón# | .4210 | 2012 | |
| 62 | Peter Sánchez# | .4204 | 2008 | |
| 63 | Ernesto Álvarez | .4203 | 1999 | |
| 64 | Jesús Delvalle | .4196 | 1977 | |
| 65 | Donald Hwang | .4192 | 1960 | |
| 66 | Jared Schneider | .4182 | 1987 | |
| 67 | Jerome Kennedy | .4177 | 1983 | |
| 68 | Javier Delgado | .4173 | 1970 | |
| 69 | Ramiro González | .4165 | 1972 | |
| 70 | Marty Dillon | .4162 | 1966 | |
| 71 | Carl Garrett | .4160 | 1985 | |
| 72 | Ernesto Álvarez | .4156 | 1996 | |
| 73 | Dave J | .4151 | 1986 | |
| 74 | Peter Sánchez# | .4144 | 2003 | |
| 75 | David Gray | .4140 | 1992 | |
| 76 | Fernando Gimarey# | .4133 | 2013 | |
| 77 | Alberto Mercado | .4127 | 1984 | |
| 78 | Marty Dillon | .4126 | 1965 | |
| 79 | Hunter Peck | .4124 | 1982 | |
| 79 | Eduardo Rodríguez | .4124 | 1988 | |
| 81 | Ernesto Álvarez | .4123 | 1997 | |
| 82 | Tommy Brooks | .4109 | 1960 | |
| 83 | Manny Rojas | .4106 | 1970 | |
| 84 | Tommy Cochrane* | .4095 | 1981 | |
| 85 | Merrill Humphrey | .4093 | 1978 | |
| 86 | António González* | .4092 | 1986 | |
| 87 | Manuel González | .4087 | 1999 | |
| 88 | John Arteaga | .4086 | 1957 | |
| 88 | Lonnie Knowles | .4086 | 1971 | |
| 88 | Mason Webb | .4086 | 1964 | |
| 88 | John Evans | .4086 | 1973 | |
| 92 | Faustino Castaneda* | .4085 | 1959 | |
| 93 | Pat Franks# | .4084 | 2011 | |
| 94 | Carl Jackson | .4080 | 1996 | |
| 95 | Ernesto Álvarez | .4072 | 2007 | |
| 96 | Armando Rivera | .4070 | 1977 | |
| 97 | Hunter Peck | .4053 | 1979 | |
| 98 | Tyler Daniels* | .4052 | 1985 | |
| 99 | Mason Webb | .4050 | 1965 | |
| 100 | Esteban López# | .4048 | 2008 |
