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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 | Frank Coleman | .9310 | 2023 | |
| 10 | Lai-hsiang Xiu# | .9048 | 2025 | |
| 11 | Jong-min Kim Jr.# | .8980 | 2029 | |
| 12 | David Lewis | .8919 | 2025 | |
| 13 | Edmond Bouet | .8889 | 2019 | |
| 14 | Haden Gregory | .8750 | 2022 | |
| 15 | Kiyonobu Yamasaki# | .8696 | 2023 | |
| 16 | Bill Nelson | .8667 | 2021 | |
| 17 | Pedro Gómez | .8636 | 2023 | |
| 18 | John Cook | .8571 | 2022 | |
| 19 | Qian Thean# | .8511 | 2028 | |
| 20 | Jong-min Kim Jr.# | .8500 | 2028 | |
| 21 | Gerard Leeder# | .8393 | 2030 | |
| 22 | Lúcio Nájera# | .8387 | 2028 | |
| 23 | Mal Rivers | .8276 | 2026 | |
| 24 | Matt Winters# | .8214 | 2027 | |
| 25 | Donald Latulippe# | .8148 | 2026 | |
| 26 | Seitaro Maruyama | .8125 | 2025 | |
| 26 | Tom Becker* | .8125 | 2013 | |
| 28 | Mike Bergeron* | .8095 | 2019 | |
| 28 | Rafael Campos# | .8095 | 2032 | |
| 30 | Adam Kerr# | .8077 | 2026 | |
| 30 | Jeffrey Coffman | .8077 | 2014 | |
| 32 | Carlos Campos# | .8056 | 2028 | |
| 33 | Joaquín Jaramillo | .8000 | 2027 | |
| 33 | Shunso Fukuda# | .8000 | 2031 | |
| 33 | Chris Collins | .8000 | 2015 | |
| 36 | Chris Collins | .7955 | 2018 | |
| 36 | Frank Coleman | .7955 | 2022 | |
| 38 | Floyd Green# | .7931 | 2026 | |
| 39 | Steve Frend* | .7917 | 2012 | |
| 40 | Jim Crawford | .7903 | 2015 | |
| 41 | Juan Mora# | .7879 | 2030 | |
| 42 | Tim McCreary | .7857 | 2028 | |
| 43 | Tracy Ashton | .7826 | 2023 | |
| 43 | Kata Nishikawa# | .7826 | 2021 | |
| 45 | Allen Cummings | .7805 | 2020 | |
| 46 | Anuvaha Tasha# | .7794 | 2029 | |
| 47 | Stanley Comiskey# | .7778 | 2030 | |
| 48 | Edwin Pratt# | .7727 | 2029 | |
| 48 | Xavier Chávez | .7727 | 2018 | |
| 50 | Jong-min Kim Jr.# | .7714 | 2025 | |
| 51 | Jorge Zamora# | .7708 | 2027 | |
| 52 | Marty Silver | .7674 | 2017 | |
| 53 | Tony Oglethorpe | .7647 | 2018 | |
| 53 | Millard Pearce | .7647 | 2024 | |
| 55 | Mike McCaw# | .7619 | 2031 | |
| 55 | León Oditón | .7619 | 2012 | |
| 57 | Khai Sui# | .7576 | 2029 | |
| 58 | Steve Wagner | .7551 | 2025 | |
| 59 | Tsuneyo Nakagawa# | .7500 | 2032 | |
| 59 | Kiyonobu Yamasaki# | .7500 | 2022 | |
| 59 | Tim McCreary | .7500 | 2017 | |
| 62 | Bradley Wolfe# | .7391 | 2031 | |
| 63 | Baber Davi# | .7368 | 2026 | |
| 63 | Joseph Mitchell | .7368 | 2021 | |
| 65 | Claude Morin | .7333 | 2018 | |
| 66 | George Soucy# | .7241 | 2026 | |
| 67 | Baden Murphy# | .7143 | 2020 | |
| 67 | Zale Kountouroudas | .7143 | 2015 | |
| 67 | Wilson Trujillo | .7143 | 2018 | |
| 67 | Dean Graham | .7143 | 2021 | |
| 71 | Akio Toyoda | .7108 | 2018 | |
| 72 | Kata Nishikawa# | .7083 | 2025 | |
| 73 | Abalendu Manglorkar# | .7077 | 2022 | |
| 74 | Pablo Ríos# | .7073 | 2023 | |
| 75 | Jong-min Kim Jr.# | .7069 | 2023 | |
| 76 | Li-chi Au | .7059 | 2021 | |
| 76 | Steve McGowan | .7059 | 2028 | |
| 78 | Sergio Esquivel | .7037 | 2017 | |
| 78 | Ebrahim Magsi# | .7037 | 2025 | |
| 78 | Stan Cheslin | .7037 | 2018 | |
| 81 | Mike Bergeron* | .7021 | 2020 | |
| 82 | Kojuro Ine# | .7000 | 2031 | |
| 83 | Baber Davi# | .6977 | 2025 | |
| 84 | Armando Moreno# | .6970 | 2022 | |
| 84 | Cristo Morán# | .6970 | 2028 | |
| 86 | Katsumoto Matsui | .6905 | 2023 | |
| 87 | Baskoro Pamungkas# | .6889 | 2032 | |
| 88 | Lúcio Nájera# | .6875 | 2022 | |
| 89 | Skip Clayton# | .6857 | 2021 | |
| 90 | Conceiçăo Loff | .6818 | 2020 | |
| 90 | Tadataka Yoshino# | .6818 | 2030 | |
| 92 | Hiroya Shimada# | .6809 | 2032 | |
| 93 | Lúcio Nájera# | .6800 | 2025 | |
| 93 | Sal Ostendorff | .6800 | 2025 | |
| 95 | James Rice | .6774 | 2026 | |
| 96 | Colin St. John | .6765 | 2014 | |
| 96 | Byron Bryant | .6765 | 2014 | |
| 98 | Dayne Reagan | .6744 | 2028 | |
| 99 | Peter Boyd | .6667 | 2020 | |
| 99 | Valentín Alvarado | .6667 | 2024 |
