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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 | Chris Collins | .5769 | 2015 | |
| 7 | Ralph Blair# | .5769 | 2031 | |
| 9 | Alvin Baldwin | .5714 | 2020 | |
| 10 | Geoffrey Jellineck | .5600 | 2021 | |
| 10 | Dennis Mayne# | .5600 | 2033 | |
| 10 | Ángel Vázquez# | .5600 | 2034 | |
| 13 | Jeff Wade | .5476 | 2019 | |
| 14 | Oliver North# | .5455 | 2027 | |
| 14 | Tsuneyo Nakagawa# | .5455 | 2032 | |
| 16 | Levi Meeuwenberg# | .5408 | 2034 | |
| 17 | Mike Bergeron* | .5385 | 2019 | |
| 18 | Tim McCreary | .5366 | 2017 | |
| 19 | Adam Kerr | .5357 | 2026 | |
| 19 | Ka-fei Bi# | .5357 | 2031 | |
| 21 | Leslie Whitney | .5333 | 2018 | |
| 22 | George Soucy | .5313 | 2026 | |
| 23 | Nick Holmes* | .5303 | 2027 | |
| 24 | Millard Pearce | .5278 | 2016 | |
| 25 | Joaquín Jaramillo | .5238 | 2027 | |
| 25 | José Rea# | .5238 | 2034 | |
| 25 | Artie Woodard# | .5238 | 2032 | |
| 28 | Esteban Ruíz# | .5217 | 2028 | |
| 28 | John Oakes# | .5217 | 2027 | |
| 28 | Tomás Gonzáles | .5217 | 2019 | |
| 31 | Tom Klein | .5185 | 2018 | |
| 32 | Stanley Comiskey# | .5172 | 2030 | |
| 33 | Joe Young | .5152 | 2027 | |
| 33 | Floyd Green | .5152 | 2026 | |
| 33 | Donald Latulippe# | .5152 | 2026 | |
| 33 | António Barbarro | .5152 | 2028 | |
| 33 | Kiyonobu Yamasaki# | .5152 | 2022 | |
| 38 | Shunso Fukuda# | .5111 | 2031 | |
| 39 | Jim Crawford | .5098 | 2017 | |
| 40 | Claude Morin | .5072 | 2018 | |
| 41 | Abalendu Manglorkar# | .5070 | 2022 | |
| 42 | Jeremy Evans | .5000 | 2019 | |
| 42 | Cristián Rivera | .5000 | 2021 | |
| 42 | Jim Crawford | .5000 | 2014 | |
| 42 | James Riley | .5000 | 2021 | |
| 42 | Eric McSwan | .5000 | 2014 | |
| 42 | Todd McCarthy# | .5000 | 2026 | |
| 42 | Matt Winters# | .5000 | 2025 | |
| 42 | Hector Lopez# | .5000 | 2034 | |
| 42 | Shunso Fukuda# | .5000 | 2032 | |
| 42 | Jorge Rosas | .5000 | 2018 | |
| 42 | Steve McGowan | .5000 | 2028 | |
| 42 | Garin Renzenbrink# | .5000 | 2034 | |
| 42 | Kiyonobu Yamasaki# | .5000 | 2023 | |
| 42 | Millard Pearce | .5000 | 2024 | |
| 42 | Lúcio Nájera# | .5000 | 2025 | |
| 57 | Ka-fei Bi# | .4930 | 2032 | |
| 58 | Jong-min Kim Jr.# | .4894 | 2028 | |
| 59 | Yasushi Kato | .4889 | 2028 | |
| 60 | David Lewis | .4878 | 2025 | |
| 61 | Tom Becker* | .4868 | 2013 | |
| 62 | Shadi bin Mufeed# | .4861 | 2033 | |
| 63 | Bill Nelson | .4848 | 2021 | |
| 64 | Anthony Cadenhead# | .4839 | 2033 | |
| 65 | Curt Hall | .4828 | 2023 | |
| 66 | Frank Lewis | .4815 | 2026 | |
| 66 | Tracy Ashton | .4815 | 2023 | |
| 66 | Steve Frend* | .4815 | 2012 | |
| 69 | Tim Shields* | .4810 | 2018 | |
| 70 | Marty Silver | .4792 | 2017 | |
| 70 | Tim McCreary | .4792 | 2018 | |
| 72 | Tony Oglethorpe | .4783 | 2018 | |
| 72 | Tim Shields* | .4783 | 2019 | |
| 72 | Joseph Mitchell | .4783 | 2021 | |
| 72 | Lai-hsiang Xiu# | .4783 | 2025 | |
| 76 | Jorge Rivera# | .4773 | 2032 | |
| 77 | Apupa Vuppula# | .4762 | 2032 | |
| 77 | Kojuro Ine# | .4762 | 2032 | |
| 77 | Scott O'Connor | .4762 | 2027 | |
| 80 | Brad Thomas | .4754 | 2020 | |
| 81 | Javier Trujillo# | .4750 | 2033 | |
| 82 | Pedro Martínez# | .4737 | 2034 | |
| 82 | Oliver North# | .4737 | 2019 | |
| 84 | Artie Woodard# | .4722 | 2028 | |
| 85 | Ángel Vázquez# | .4706 | 2033 | |
| 85 | Tom Lampley# | .4706 | 2030 | |
| 87 | Tim Raines | .4694 | 2023 | |
| 87 | Kelsey Sherrill | .4694 | 2032 | |
| 89 | Mal Rivers | .4688 | 2026 | |
| 90 | Ángel Vázquez# | .4679 | 2026 | |
| 91 | Matt Winters# | .4677 | 2026 | |
| 92 | Shannon Craft# | .4667 | 2029 | |
| 93 | Jong-min Kim Jr.# | .4655 | 2029 | |
| 94 | Conceição Loff | .4643 | 2020 | |
| 94 | Wilson Flores | .4643 | 2026 | |
| 96 | Mike Davis# | .4630 | 2027 | |
| 96 | Mike Bergeron* | .4630 | 2020 | |
| 98 | Colin St. John | .4625 | 2014 | |
| 98 | Tim Shields* | .4625 | 2021 | |
| 100 | Tom Lampley# | .4615 | 2026 |
