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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | SLG | YEAR | Open Postseason Career Leaderboard |
|---|---|---|---|---|
| 1 | Bob McCullough | 1.1250 | 2023 | |
| 2 | Tomás Gonzáles | 1.0476 | 2019 | |
| 3 | Curt Hall | 1.0385 | 2023 | |
| 4 | Shunso Fukuda# | 1.0000 | 2032 | |
| 5 | George Soucy | .9655 | 2025 | |
| 6 | Frank Lewis | .9600 | 2028 | |
| 7 | Geoffrey Jellineck | .9565 | 2021 | |
| 8 | John Oakes# | .9524 | 2027 | |
| 9 | José Rea# | .9412 | 2034 | |
| 10 | Frank Coleman | .9310 | 2023 | |
| 11 | Garin Renzenbrink# | .9048 | 2034 | |
| 11 | Lai-hsiang Xiu# | .9048 | 2025 | |
| 13 | Jong-min Kim Jr.# | .8980 | 2029 | |
| 14 | David Lewis | .8919 | 2025 | |
| 15 | Edmond Bouet | .8889 | 2019 | |
| 16 | Haden Gregory | .8750 | 2022 | |
| 17 | Kiyonobu Yamasaki# | .8696 | 2023 | |
| 18 | Bill Nelson | .8667 | 2021 | |
| 19 | Pedro Gómez | .8636 | 2023 | |
| 20 | Angel Barajas# | .8571 | 2033 | |
| 20 | John Cook | .8571 | 2022 | |
| 22 | Qian Thean# | .8511 | 2028 | |
| 23 | Jong-min Kim Jr.# | .8500 | 2028 | |
| 24 | Gerard Leeder# | .8393 | 2030 | |
| 25 | Lúcio Nájera# | .8387 | 2028 | |
| 26 | Mal Rivers | .8276 | 2026 | |
| 27 | Reynaldo Aguilera# | .8261 | 2033 | |
| 28 | Matt Winters# | .8214 | 2027 | |
| 29 | Donald Latulippe# | .8148 | 2026 | |
| 30 | Seitaro Maruyama | .8125 | 2025 | |
| 30 | Tom Becker* | .8125 | 2013 | |
| 32 | Mike Bergeron* | .8095 | 2019 | |
| 32 | Rafael Campos# | .8095 | 2032 | |
| 34 | Adam Kerr | .8077 | 2026 | |
| 34 | Jeffrey Coffman | .8077 | 2014 | |
| 36 | Carlos Campos | .8056 | 2028 | |
| 37 | Joaquín Jaramillo | .8000 | 2027 | |
| 37 | Chris Collins | .8000 | 2015 | |
| 37 | Shunso Fukuda# | .8000 | 2031 | |
| 40 | Frank Coleman | .7955 | 2022 | |
| 40 | Chris Collins | .7955 | 2018 | |
| 42 | Floyd Green | .7931 | 2026 | |
| 43 | Steve Frend* | .7917 | 2012 | |
| 44 | Jim Crawford | .7903 | 2015 | |
| 45 | Juan Mora# | .7879 | 2030 | |
| 46 | Tim McCreary | .7857 | 2028 | |
| 47 | Kata Nishikawa | .7826 | 2021 | |
| 47 | Tracy Ashton | .7826 | 2023 | |
| 49 | Bagaskoro Pakpahan# | .7813 | 2033 | |
| 50 | Allen Cummings | .7805 | 2020 | |
| 51 | Anuvaha Tasha# | .7794 | 2029 | |
| 52 | Stanley Comiskey# | .7778 | 2030 | |
| 53 | Edwin Pratt# | .7727 | 2029 | |
| 53 | Xavier Chávez | .7727 | 2018 | |
| 55 | Jong-min Kim Jr.# | .7714 | 2025 | |
| 56 | Jorge Zamora# | .7708 | 2027 | |
| 57 | Levi Meeuwenberg# | .7681 | 2034 | |
| 58 | Marty Silver | .7674 | 2017 | |
| 59 | Millard Pearce | .7647 | 2024 | |
| 59 | Tony Oglethorpe | .7647 | 2018 | |
| 61 | Mike McCaw# | .7619 | 2031 | |
| 61 | León Oditón | .7619 | 2012 | |
| 63 | Camden Mansel# | .7576 | 2034 | |
| 63 | Khai Sui# | .7576 | 2029 | |
| 65 | Steve Wagner | .7551 | 2025 | |
| 66 | Kiyonobu Yamasaki# | .7500 | 2022 | |
| 66 | Tim McCreary | .7500 | 2017 | |
| 66 | Tsuneyo Nakagawa# | .7500 | 2032 | |
| 69 | Fernando Franco# | .7442 | 2034 | |
| 70 | Bradley Wolfe# | .7391 | 2031 | |
| 71 | Baber Davi# | .7368 | 2026 | |
| 71 | Joseph Mitchell | .7368 | 2021 | |
| 73 | Claude Morin | .7333 | 2018 | |
| 74 | George Soucy | .7241 | 2026 | |
| 75 | Baden Murphy# | .7143 | 2020 | |
| 75 | Dennis Mayne# | .7143 | 2033 | |
| 75 | Zale Kountouroudas | .7143 | 2015 | |
| 75 | Dean Graham | .7143 | 2021 | |
| 75 | Wilson Trujillo | .7143 | 2018 | |
| 80 | Akio Toyoda | .7108 | 2018 | |
| 81 | Shawn Harris# | .7105 | 2033 | |
| 82 | Kata Nishikawa | .7083 | 2025 | |
| 82 | Rodrigo Quiñones# | .7083 | 2033 | |
| 84 | Abalendu Manglorkar# | .7077 | 2022 | |
| 85 | Pablo Ríos# | .7073 | 2023 | |
| 86 | Jong-min Kim Jr.# | .7069 | 2023 | |
| 87 | Li-chi Au | .7059 | 2021 | |
| 87 | Steve McGowan | .7059 | 2028 | |
| 89 | Stan Cheslin | .7037 | 2018 | |
| 89 | Sergio Esquivel | .7037 | 2017 | |
| 89 | Ebrahim Magsi | .7037 | 2025 | |
| 92 | Mike Bergeron* | .7021 | 2020 | |
| 93 | Kojuro Ine# | .7000 | 2031 | |
| 94 | Baber Davi# | .6977 | 2025 | |
| 95 | Armando Moreno# | .6970 | 2022 | |
| 95 | Cristo Morán# | .6970 | 2028 | |
| 97 | Ángel Vázquez# | .6957 | 2034 | |
| 98 | Antonio Roman# | .6905 | 2034 | |
| 98 | Katsumoto Matsui | .6905 | 2023 | |
| 100 | Baskoro Pamungkas# | .6889 | 2032 |
