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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Frank Thomas III* | .5859 | 2012 | |
| 2 | William Moreland* | .5839 | 2021 | |
| 3 | Chris Klein | .5734 | 2023 | |
| 4 | William Moreland* | .5642 | 2023 | |
| 5 | Stu Baker | .5596 | 2011 | |
| 6 | Stu Baker | .5486 | 2010 | |
| 7 | Gabriel Gómez | .5485 | 2010 | |
| 8 | Joaquin Hebner | .5472 | 2032 | |
| 9 | Manuel Aguilar, Jr. | .5444 | 2033 | |
| 10 | Joaquin Hebner | .5423 | 2033 | |
| 11 | Frank Thomas III* | .5420 | 2011 | |
| 12 | Jack Cox | .5409 | 2035 | |
| 13 | Steve Dempsey | .5385 | 2022 | |
| 14 | Jude Rogers Jr. | .5379 | 2018 | |
| 15 | Anthony Scherer | .5377 | 2025 | |
| 16 | Shelby Sturge | .5375 | 2055 | |
| 17 | Clarence Brown | .5344 | 2011 | |
| 17 | Quintin Canavan | .5344 | 2015 | |
| 19 | Tyler Ober# | .5340 | 2045 | |
| 20 | Lynn Carpenter | .5333 | 2025 | |
| 20 | Gary Knowles | .5333 | 2011 | |
| 22 | Mark Haynes | .5312 | 2035 | |
| 23 | Bane McCoy# | .5287 | 2050 | |
| 24 | Ricardo Norris# | .5227 | 2056 | |
| 25 | Pat Crum | .5211 | 2030 | |
| 26 | Paul Young | .5187 | 2041 | |
| 27 | Bane McCoy# | .5169 | 2052 | |
| 28 | Joseph Turner | .5153 | 2020 | |
| 29 | Norberto García | .5149 | 2025 | |
| 30 | Dallas Miller | .5143 | 2021 | |
| 30 | Ernesto Sousa | .5143 | 2037 | |
| 32 | Bane McCoy# | .5134 | 2051 | |
| 33 | Carlos Hinojosa | .5130 | 2027 | |
| 34 | Pedro Carmona# | .5109 | 2055 | |
| 35 | Paco Cerda | .5103 | 2015 | |
| 36 | Christian Wall | .5096 | 2018 | |
| 37 | Mike McClure# | .5080 | 2049 | |
| 38 | Bill Craig | .5079 | 2024 | |
| 39 | Alfredo Velázquez | .5075 | 2024 | |
| 40 | Rubén Flores | .5072 | 2020 | |
| 41 | Steve Dempsey | .5070 | 2021 | |
| 42 | António Salas | .5060 | 2032 | |
| 43 | Paul Cash | .5052 | 2035 | |
| 44 | Bob Ross | .5049 | 2025 | |
| 45 | Tim Navarro | .5046 | 2019 | |
| 46 | Jonathan Walker | .5028 | 2034 | |
| 47 | Kelly King | .5024 | 2019 | |
| 48 | Walter H. Uno | .5000 | 2009 | |
| 48 | Tracy Allison# | .5000 | 2051 | |
| 48 | John Todd | .5000 | 2036 | |
| 48 | Charles Ellis | .5000 | 2025 | |
| 52 | Rubén Flores | .4978 | 2021 | |
| 53 | Rubén Flores | .4976 | 2022 | |
| 54 | Jorge González | .4975 | 2017 | |
| 55 | Gilbert Murphy | .4970 | 2020 | |
| 56 | Peter Crocker | .4946 | 2039 | |
| 57 | Paul Young | .4945 | 2042 | |
| 58 | Steve Swain | .4928 | 2010 | |
| 59 | Charles Ellis | .4926 | 2026 | |
| 60 | Gary Brooks | .4891 | 2042 | |
| 61 | Javier García | .4889 | 2025 | |
| 62 | Steve Rogers | .4880 | 2036 | |
| 63 | Phil Smith | .4868 | 2031 | |
| 64 | Jonathan Walker | .4862 | 2032 | |
| 65 | Alonso Fernández | .4851 | 2017 | |
| 65 | Gabriel Gómez | .4851 | 2009 | |
| 67 | Fulton Reed | .4837 | 2012 | |
| 68 | Otton Pomper | .4834 | 2019 | |
| 69 | Carlos Hinojosa | .4833 | 2026 | |
| 70 | Ernesto Sousa | .4821 | 2036 | |
| 70 | Tony Horton# | .4821 | 2039 | |
| 72 | Gabriel Franco# | .4820 | 2058 | |
| 73 | Jack Cox | .4815 | 2036 | |
| 74 | Rafael Mota | .4807 | 2035 | |
| 75 | Dudley Hoover | .4798 | 2018 | |
| 76 | Jesús Morales | .4792 | 2022 | |
| 76 | Herb Kirkham | .4792 | 2029 | |
| 76 | Elmer Mould | .4792 | 2010 | |
| 79 | Gabriel Gómez | .4785 | 2008 | |
| 80 | Mike Tate | .4774 | 2021 | |
| 81 | Lynn Carpenter | .4770 | 2024 | |
| 81 | Eduardo Andrés | .4770 | 2026 | |
| 83 | Edgardo Díaz | .4762 | 2036 | |
| 83 | Jason Oliver | .4762 | 2031 | |
| 83 | Johnny García | .4762 | 2026 | |
| 86 | Mark Haynes | .4759 | 2034 | |
| 87 | Don Tobias | .4755 | 2033 | |
| 88 | William Moreland* | .4754 | 2022 | |
| 89 | Jason Powell | .4752 | 2019 | |
| 90 | Adam Yates | .4749 | 2032 | |
| 91 | Adrián Mora | .4745 | 2010 | |
| 92 | Joe Flores | .4742 | 2030 | |
| 93 | Luis López | .4740 | 2039 | |
| 94 | Kevin MacIntyre | .4737 | 2030 | |
| 95 | António Ramos | .4731 | 2035 | |
| 95 | Adrián Mora | .4731 | 2009 | |
| 95 | Bob Cornett | .4731 | 2021 | |
| 98 | José Aloniz# | .4725 | 2058 | |
| 99 | Carlos Curry | .4724 | 2021 | |
| 100 | Phil Smith | .4721 | 2030 |
