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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Zounes Kamuzu | .4671 | 2061 | |
| 2 | Kieran Kennedy | .4660 | 2024 | |
| 3 | Matty Hrinko# | .4650 | 2077 | |
| 4 | Bobby Aguinaga# | .4623 | 2081 | |
| 5 | Tohru Asano* | .4615 | 2066 | |
| 6 | Kenzie Dingwell* | .4585 | 2058 | |
| 7 | Billy Morf# | .4583 | 2080 | |
| 8 | Luis Maldonado* | .4575 | 2005 | |
| 9 | Bill Christensen | .4548 | 2019 | |
| 10 | George Baker* | .4495 | 2004 | |
| 11 | Kieran van Buskirk | .4489 | 2050 | |
| 12 | Bill Christensen | .4483 | 2021 | |
| 13 | Ricardo Rivera* | .4481 | 2041 | |
| 14 | Ben Bute | .4472 | 2042 | |
| 14 | Mike McKasson# | .4472 | 2084 | |
| 16 | Kieran Kennedy | .4462 | 2022 | |
| 17 | Elmo Englehardt | .4461 | 2017 | |
| 18 | Kieran van Buskirk | .4457 | 2052 | |
| 19 | Pedro Vega* | .4446 | 2009 | |
| 20 | Bill Christensen | .4433 | 2020 | |
| 21 | Pedro Vega* | .4431 | 2018 | |
| 22 | Albert Cranberri* | .4424 | 2008 | |
| 23 | Ricardo Rivera* | .4402 | 2039 | |
| 24 | Billy Morf# | .4399 | 2081 | |
| 25 | Elmo Englehardt | .4396 | 2016 | |
| 26 | Pedro Vega* | .4394 | 2013 | |
| 27 | Alejandro Hernández | .4383 | 1993 | |
| 28 | Zahi Cobo# | .4380 | 2079 | |
| 29 | Anthony Sackett* | .4368 | 2009 | |
| 30 | Bill Christensen | .4346 | 2026 | |
| 31 | Edgar Malhado# | .4345 | 2082 | |
| 32 | Ángel Plecks | .4342 | 2017 | |
| 33 | In-ho Kwak* | .4341 | 2026 | |
| 34 | Luis Maldonado* | .4323 | 2007 | |
| 35 | Albert Cranberri* | .4321 | 2007 | |
| 36 | Kieran Kennedy | .4318 | 2021 | |
| 37 | Pedro Sosa | .4317 | 2001 | |
| 38 | Edgar Albuja# | .4300 | 2079 | |
| 39 | George Baker* | .4299 | 2006 | |
| 40 | Bobby Brito# | .4288 | 2081 | |
| 41 | Bill Christensen | .4280 | 2022 | |
| 42 | Ricardo Rivera* | .4278 | 2036 | |
| 43 | Albert Cranberri* | .4277 | 2010 | |
| 44 | Takaaki Mori | .4270 | 2048 | |
| 45 | Kieran Kennedy | .4264 | 2026 | |
| 45 | Ricardo Rivera* | .4264 | 2040 | |
| 47 | Bruce Batstone | .4263 | 2023 | |
| 48 | Hector Font | .4260 | 2065 | |
| 49 | Leon Almazan | .4254 | 2070 | |
| 50 | Matty Hrinko# | .4252 | 2078 | |
| 50 | In-ho Kwak* | .4252 | 2030 | |
| 52 | Ricardo Rivera* | .4241 | 2037 | |
| 53 | Elliot Apell | .4232 | 2044 | |
| 54 | Alejandro Aguilar* | .4226 | 2043 | |
| 54 | Kenzie Dingwell* | .4226 | 2059 | |
| 56 | Daniel Naranjo | .4218 | 2061 | |
| 57 | Albert Cranberri* | .4214 | 2012 | |
| 58 | Albert Cranberri* | .4213 | 2011 | |
| 59 | Elliot Apell | .4211 | 2039 | |
| 59 | José Rivera* | .4211 | 2053 | |
| 61 | Sean Culhane | .4205 | 2068 | |
| 62 | Kieran Kennedy | .4201 | 2023 | |
| 63 | Kieran Kennedy | .4192 | 2025 | |
| 63 | Daniel Naranjo | .4192 | 2059 | |
| 65 | George Baker* | .4189 | 2005 | |
| 66 | Pedro Vega* | .4188 | 2015 | |
| 67 | Albert Cranberri* | .4187 | 2003 | |
| 68 | Edgar Malhado# | .4185 | 2081 | |
| 69 | Alonso Barrisos | .4184 | 2049 | |
| 69 | Pedro Gonzáles* | .4184 | 2016 | |
| 71 | Alejandro Hernández | .4182 | 1990 | |
| 72 | Ricardo Rivera* | .4180 | 2043 | |
| 73 | Ted Walker* | .4178 | 2010 | |
| 74 | Bobby Aguinaga# | .4176 | 2084 | |
| 75 | Daniel Naranjo | .4175 | 2060 | |
| 75 | Anacleto Patinho | .4175 | 2066 | |
| 75 | Elliot Apell | .4175 | 2038 | |
| 78 | Alejandro Aguilar* | .4171 | 2033 | |
| 79 | Ángel Ochoa | .4168 | 2003 | |
| 79 | Billy Cochran | .4168 | 2015 | |
| 81 | Tony Landry | .4165 | 2043 | |
| 82 | Kieran Kennedy | .4163 | 2020 | |
| 82 | Berty Sare | .4163 | 2061 | |
| 84 | Pedro Vega* | .4161 | 2011 | |
| 85 | Sergio Campos | .4157 | 2006 | |
| 86 | Hollis Johnson | .4156 | 2024 | |
| 87 | Matty Hrinko# | .4150 | 2080 | |
| 88 | Zounes Kamuzu | .4149 | 2064 | |
| 88 | Ted Walker* | .4149 | 2016 | |
| 90 | Willis Briceno* | .4148 | 2065 | |
| 91 | Matty Hrinko# | .4143 | 2076 | |
| 92 | Hector Font | .4142 | 2062 | |
| 93 | Chuck Armstrong | .4137 | 2038 | |
| 94 | Kenzie Dingwell* | .4135 | 2056 | |
| 95 | Brian McDaniel | .4133 | 2023 | |
| 95 | Sean Culhane | .4133 | 2067 | |
| 97 | Ricardo Rivera* | .4132 | 2035 | |
| 98 | Anacleto Patinho | .4129 | 2071 | |
| 98 | Chuck Armstrong | .4129 | 2034 | |
| 100 | Henry Sosa# | .4127 | 2084 |
