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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Postseason Career Leaderboard |
|---|---|---|---|---|
| 1 | Frank Coleman | .6129 | 2023 | |
| 2 | Seitaro Maruyama | .6087 | 2025 | |
| 3 | Frank Lewis | .6071 | 2028 | |
| 4 | George Soucy* | .6061 | 2025 | |
| 5 | Kata Nishikawa | .6000 | 2021 | |
| 6 | Jim Crawford | .5949 | 2015 | |
| 7 | Levi Meeuwenberg* | .5882 | 2038 | |
| 8 | Ralph Blair* | .5769 | 2031 | |
| 8 | Hernando De Soto# | .5769 | 2057 | |
| 8 | Chris Collins | .5769 | 2015 | |
| 11 | Alvin Baldwin | .5714 | 2020 | |
| 11 | Rafael Gómez | .5714 | 2041 | |
| 13 | Hernando De Soto# | .5686 | 2043 | |
| 14 | Robert Mentzer* | .5682 | 2038 | |
| 15 | Tim Maki | .5652 | 2050 | |
| 16 | Dennis Mayne | .5600 | 2033 | |
| 16 | Ángel Vázquez* | .5600 | 2034 | |
| 16 | Geoffrey Jellineck | .5600 | 2021 | |
| 19 | Jeff Wade | .5476 | 2019 | |
| 20 | Daniel Staub Jr.# | .5455 | 2048 | |
| 20 | Tsuneyo Nakagawa | .5455 | 2032 | |
| 20 | Oliver North* | .5455 | 2027 | |
| 23 | George Patten# | .5417 | 2055 | |
| 24 | Levi Meeuwenberg* | .5408 | 2034 | |
| 25 | Roger Barrett* | .5397 | 2044 | |
| 26 | Aaron Boomgarden | .5385 | 2046 | |
| 26 | Mike Bergeron* | .5385 | 2019 | |
| 28 | Tim McCreary | .5366 | 2017 | |
| 29 | John Popper# | .5362 | 2052 | |
| 30 | Adam Kerr | .5357 | 2026 | |
| 30 | Ka-fei Bi | .5357 | 2031 | |
| 30 | Jordan Vargas | .5357 | 2038 | |
| 33 | Leslie Whitney | .5333 | 2018 | |
| 34 | George Soucy* | .5312 | 2026 | |
| 35 | Nick Holmes* | .5303 | 2027 | |
| 36 | Millard Pearce | .5278 | 2016 | |
| 37 | Havana Bob Ackley# | .5238 | 2045 | |
| 37 | Bryan Anson | .5238 | 2038 | |
| 37 | Artie Woodard | .5238 | 2032 | |
| 37 | José Rea | .5238 | 2034 | |
| 37 | Joaquín Jaramillo | .5238 | 2027 | |
| 42 | Esteban Ruíz | .5217 | 2028 | |
| 42 | Tomás Gonzáles | .5217 | 2019 | |
| 42 | John Oakes* | .5217 | 2027 | |
| 42 | Chris Plauche# | .5217 | 2050 | |
| 46 | Hernando De Soto# | .5211 | 2038 | |
| 47 | Al Harmon | .5200 | 2051 | |
| 47 | Sergey Galperin | .5200 | 2044 | |
| 49 | Tom Klein | .5185 | 2018 | |
| 50 | Stanley Comiskey | .5172 | 2030 | |
| 50 | Niles Killebrew | .5172 | 2043 | |
| 50 | Manolo González | .5172 | 2044 | |
| 53 | Jorge Zamora* | .5161 | 2037 | |
| 54 | Joe Young | .5152 | 2027 | |
| 54 | Floyd Green | .5152 | 2026 | |
| 54 | Daniel Daly# | .5152 | 2046 | |
| 54 | António Barbarro | .5152 | 2028 | |
| 54 | Kiyonobu Yamasaki* | .5152 | 2022 | |
| 54 | Donald Latulippe | .5152 | 2026 | |
| 60 | Alex Garza# | .5122 | 2056 | |
| 61 | Shunso Fukuda | .5111 | 2031 | |
| 62 | Jim Crawford | .5098 | 2017 | |
| 63 | Ervin Brewbaker | .5094 | 2040 | |
| 64 | Claude Morin | .5072 | 2018 | |
| 65 | Abalendu Manglorkar* | .5070 | 2022 | |
| 66 | Matt Winters* | .5000 | 2025 | |
| 66 | Shunso Fukuda | .5000 | 2032 | |
| 66 | Millard Pearce | .5000 | 2024 | |
| 66 | Lúcio Nájera | .5000 | 2025 | |
| 66 | Kiyonobu Yamasaki* | .5000 | 2023 | |
| 66 | Cristián Rivera | .5000 | 2021 | |
| 66 | Jeremy Evans | .5000 | 2019 | |
| 66 | Garin Renzenbrink | .5000 | 2034 | |
| 66 | Steve McGowan* | .5000 | 2028 | |
| 66 | John Popper# | .5000 | 2055 | |
| 66 | Levi Meeuwenberg* | .5000 | 2035 | |
| 66 | Jose Romero# | .5000 | 2051 | |
| 66 | Marco Antonio Guillermo# | .5000 | 2043 | |
| 66 | James Riley | .5000 | 2021 | |
| 66 | Jorge Rosas | .5000 | 2018 | |
| 66 | Jerry de Leon# | .5000 | 2052 | |
| 66 | Jerry Schnoor | .5000 | 2036 | |
| 66 | Todd McCarthy | .5000 | 2026 | |
| 66 | Hector Lopez | .5000 | 2034 | |
| 66 | Danny Devlin | .5000 | 2053 | |
| 66 | Joaquin Carrera | .5000 | 2047 | |
| 66 | Jim Crawford | .5000 | 2014 | |
| 66 | Eric McSwan | .5000 | 2014 | |
| 89 | Ka-fei Bi | .4930 | 2032 | |
| 90 | Jong-min Kim Jr.* | .4894 | 2028 | |
| 91 | Yasushi Kato | .4889 | 2028 | |
| 92 | David Lewis | .4878 | 2025 | |
| 93 | Tom Becker* | .4868 | 2013 | |
| 94 | Shadi bin Mufeed | .4861 | 2033 | |
| 95 | Bill Nelson | .4848 | 2021 | |
| 96 | Levi Meeuwenberg* | .4839 | 2040 | |
| 96 | Anthony Cadenhead | .4839 | 2033 | |
| 96 | Roger Barrett* | .4839 | 2040 | |
| 99 | Doug Dimmadome# | .4831 | 2054 | |
| 100 | Curt Hall* | .4828 | 2023 |
