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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Gil Lewis* | .4846 | 2041 | |
| 2 | Gilberto Amador# | .4808 | 2068 | |
| 3 | J.R. Zaitsoff | .4748 | 2040 | |
| 4 | Gil Lewis* | .4638 | 2046 | |
| 5 | Gil Lewis* | .4596 | 2042 | |
| 6 | Gil Lewis* | .4568 | 2039 | |
| 7 | J.R. Zaitsoff | .4561 | 2034 | |
| 8 | José Paredes | .4545 | 2062 | |
| 9 | Adrian Perry | .4535 | 2041 | |
| 10 | Gil Lewis* | .4533 | 2048 | |
| 11 | Gil Lewis* | .4530 | 2049 | |
| 11 | Armando Pena* | .4530 | 2036 | |
| 13 | Jack Beacham | .4508 | 2058 | |
| 14 | Armando Pena* | .4507 | 2026 | |
| 15 | Donovan Shepard | .4496 | 2058 | |
| 16 | Armando Pena* | .4459 | 2035 | |
| 17 | J.R. Zaitsoff | .4455 | 2037 | |
| 18 | Gil Lewis* | .4451 | 2040 | |
| 19 | J.R. Zaitsoff | .4443 | 2031 | |
| 20 | Gil Lewis* | .4440 | 2043 | |
| 21 | Lonny Bonnett | .4426 | 2032 | |
| 22 | Michael Sanders | .4395 | 2054 | |
| 23 | J.R. Zaitsoff | .4394 | 2029 | |
| 24 | Jack Beacham | .4393 | 2056 | |
| 25 | Jack Beacham | .4389 | 2054 | |
| 26 | Carlos Rodríguez | .4384 | 2034 | |
| 27 | Noritada Ota | .4376 | 2038 | |
| 28 | Rusty Chamberlain | .4375 | 2030 | |
| 29 | J.R. Zaitsoff | .4351 | 2038 | |
| 30 | John Garrard* | .4348 | 2038 | |
| 31 | David Torres | .4342 | 2055 | |
| 32 | Gil Lewis* | .4331 | 2051 | |
| 33 | Derrick Thomas# | .4326 | 2064 | |
| 34 | Gonzalo Gredillas# | .4316 | 2059 | |
| 35 | Gil Lewis* | .4303 | 2050 | |
| 36 | Gil Lewis* | .4296 | 2045 | |
| 37 | José Beltrán | .4294 | 2046 | |
| 37 | Pruden Chavez | .4294 | 2021 | |
| 39 | Knox Harrington | .4283 | 2027 | |
| 40 | Michael Kinney | .4277 | 2054 | |
| 41 | Víctor Guzmán* | .4276 | 2041 | |
| 42 | Gil Lewis* | .4275 | 2044 | |
| 43 | Jack Beacham | .4271 | 2057 | |
| 44 | Eric Bullock | .4252 | 2063 | |
| 45 | José Hurtado | .4250 | 2058 | |
| 46 | Kyle Christopher# | .4239 | 2068 | |
| 47 | Lonny Bonnett | .4235 | 2027 | |
| 48 | Javier Chávez | .4233 | 2045 | |
| 48 | Joe Gray | .4233 | 2057 | |
| 50 | Pete Heygate* | .4232 | 2048 | |
| 51 | Eddy Davis | .4228 | 2054 | |
| 52 | Gonzalo Gredillas# | .4211 | 2060 | |
| 53 | Carlos Rodríguez | .4207 | 2037 | |
| 53 | Ted Tardy* | .4207 | 2018 | |
| 55 | Kojuro Takahashi | .4199 | 2056 | |
| 56 | Rusty Chamberlain | .4185 | 2031 | |
| 57 | James Wooding | .4182 | 2028 | |
| 57 | Donovan Shepard | .4182 | 2060 | |
| 59 | Pedro Robles | .4181 | 2060 | |
| 59 | William Johns | .4181 | 2066 | |
| 61 | Armando Pena* | .4169 | 2025 | |
| 62 | Bobby Lloyd# | .4157 | 2062 | |
| 63 | Lonny Bonnett | .4154 | 2038 | |
| 63 | William Johns | .4154 | 2061 | |
| 65 | Víctor Guzmán* | .4150 | 2040 | |
| 66 | Noritada Ota | .4141 | 2036 | |
| 67 | Kyle Christopher# | .4134 | 2069 | |
| 68 | Adelmar Marceiro | .4130 | 2049 | |
| 69 | Buster Labrador | .4127 | 2014 | |
| 70 | Armando Pena* | .4122 | 2024 | |
| 71 | Adelmar Marceiro | .4118 | 2052 | |
| 72 | Chae-hyeong Ch'oe | .4114 | 2038 | |
| 73 | Carlos Mendoza# | .4110 | 2072 | |
| 74 | Andrew Utecht | .4100 | 2026 | |
| 75 | Rusty Chamberlain | .4099 | 2032 | |
| 75 | Armando García | .4099 | 2051 | |
| 77 | Ron Baker | .4090 | 2030 | |
| 78 | Lonny Bonnett | .4085 | 2028 | |
| 79 | Eisaku Miyamoto | .4084 | 2032 | |
| 80 | Gilberto Amador# | .4083 | 2070 | |
| 80 | Armando García | .4083 | 2053 | |
| 82 | Pruden Chavez | .4081 | 2034 | |
| 82 | Alfredo Medina | .4081 | 2054 | |
| 84 | Suzu Noriyori | .4077 | 2028 | |
| 85 | Thomas Rudy | .4069 | 2025 | |
| 85 | Adrian Perry | .4069 | 2036 | |
| 87 | Suzu Noriyori | .4068 | 2030 | |
| 88 | Fabian Alou | .4066 | 2017 | |
| 89 | Jose Chaparro | .4064 | 2027 | |
| 90 | Alejandro Ramos | .4055 | 2045 | |
| 91 | William Johns | .4052 | 2067 | |
| 92 | Armando García | .4048 | 2043 | |
| 93 | Gilberto Amador# | .4044 | 2071 | |
| 94 | Scot Potter# | .4038 | 2065 | |
| 95 | Juan Bonilla | .4034 | 2032 | |
| 95 | Joe Gray | .4034 | 2061 | |
| 97 | Pete Heygate* | .4031 | 2052 | |
| 98 | Buster Labrador | .4027 | 2017 | |
| 99 | Frank Strong | .4024 | 2014 | |
| 100 | Juan Escobar | .4020 | 2049 |
