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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | SLG | YEAR | Open Postseason Leaderboard |
|---|---|---|---|---|
| 1 | Júlio Ruíz# | .7949 | 2022-2022 | |
| 2 | Lorenzo Castillo# | .7759 | 2026-2027 | |
| 3 | Dean Smith# | .7317 | 2019-2019 | |
| 4 | John Oakes# | .7206 | 2025-2026 | |
| 5 | Ryan Marshall | .6842 | 2017-2017 | |
| 6 | Lu-po-teh Cheung# | .6739 | 2019-2019 | |
| 7 | Lorenzo Castro# | .6364 | 2018-2018 | |
| 8 | Matt Conway# | .6316 | 2018-2018 | |
| 9 | Shi-kai Tsu# | .6250 | 2027-2027 | |
| 10 | Kiyoemon Aoki | .6197 | 2020-2023 | |
| 11 | Jeff Barraclough | .6190 | 2024-2024 | |
| 12 | Yoshitoki Tanaka | .6173 | 2020-2024 | |
| 13 | Ambhoruha Vijayanath# | .6154 | 2020-2020 | |
| 14 | Atmo Subadio# | .6038 | 2026-2026 | |
| 15 | Ben Frazier | .6000 | 2014-2019 | |
| 15 | Jake Hunt# | .6000 | 2020-2021 | |
| 15 | Kazuhiro Morita# | .6000 | 2020-2020 | |
| 18 | Kendrick Lane | .5957 | 2020-2020 | |
| 19 | Kohei Matsumoto# | .5949 | 2025-2027 | |
| 20 | Joe Burke# | .5882 | 2025-2027 | |
| 21 | Cao Ho# | .5862 | 2022-2023 | |
| 22 | Danny Griggs# | .5854 | 2020-2020 | |
| 23 | Kiyonobu Yamasaki# | .5800 | 2017-2017 | |
| 24 | Jacques Carpentier | .5745 | 2013-2013 | |
| 25 | Billy Daig | .5591 | 2020-2025 | |
| 26 | Guillermo Luna# | .5588 | 2023-2023 | |
| 27 | Terry Briggs# | .5556 | 2018-2022 | |
| 27 | Tom Wyatt | .5556 | 2019-2020 | |
| 29 | Kenshin Yamashita# | .5500 | 2021-2022 | |
| 30 | Derek Reaveley | .5439 | 2021-2022 | |
| 31 | Jeffrey Wright | .5429 | 2022-2022 | |
| 32 | Nick McBride | .5405 | 2016-2016 | |
| 32 | Arturo Velásquez# | .5405 | 2026-2027 | |
| 34 | Motoki Kanno# | .5385 | 2023-2026 | |
| 35 | Don Strickland | .5349 | 2019-2019 | |
| 36 | Taro Omori# | .5294 | 2021-2021 | |
| 37 | Garrett Bennett | .5278 | 2016-2016 | |
| 38 | Elmer Brown | .5263 | 2018-2018 | |
| 38 | Jerry Gibbs# | .5263 | 2019-2019 | |
| 40 | Jay Faulkner | .5238 | 2016-2016 | |
| 41 | Tetsu Araki# | .5231 | 2022-2023 | |
| 42 | Jesús Valenzuela# | .5227 | 2025-2025 | |
| 43 | Sang-soo Kim# | .5185 | 2026-2026 | |
| 44 | Juan Guerrero | .5138 | 2021-2025 | |
| 45 | Frank Hall | .5106 | 2022-2023 | |
| 46 | Tokaji Sato# | .5085 | 2025-2026 | |
| 47 | Yuan-zhang Pi# | .5079 | 2026-2027 | |
| 48 | Ronald Bilderbeek# | .5000 | 2027-2027 | |
| 48 | Oscar Jones# | .5000 | 2020-2021 | |
| 50 | Masatake Ishii# | .4925 | 2019-2024 | |
| 51 | Dave Anderson | .4918 | 2021-2023 | |
| 52 | Taylor Thompson | .4889 | 2014-2014 | |
| 53 | Amador Bagadion# | .4872 | 2022-2023 | |
| 54 | Wes Alexander# | .4833 | 2023-2025 | |
| 55 | Edgar Smith# | .4808 | 2017-2017 | |
| 56 | Doug Daniels | .4787 | 2018-2023 | |
| 57 | Bo Bing# | .4762 | 2022-2025 | |
| 58 | Rafael Pérez | .4750 | 2018-2018 | |
| 58 | Luis Rodríguez | .4750 | 2016-2016 | |
| 60 | Federico Cavatta# | .4727 | 2023-2023 | |
| 60 | José Rivera | .4727 | 2015-2015 | |
| 62 | Vihaan Vedant# | .4714 | 2019-2020 | |
| 63 | Júlio Rodríguez | .4681 | 2019-2020 | |
| 64 | Claude Bourgoin | .4677 | 2018-2021 | |
| 65 | Sadao Masuda# | .4651 | 2024-2024 | |
| 66 | Jarrod Parrish | .4643 | 2017-2017 | |
| 67 | Kuemon Yasuda | .4615 | 2017-2017 | |
| 68 | Yasukazu Kiyomizu | .4595 | 2017-2017 | |
| 69 | Takuji Hakui | .4571 | 2014-2014 | |
| 70 | Garin Renzenbrink# | .4545 | 2026-2027 | |
| 71 | Tom Hanson# | .4500 | 2026-2027 | |
| 71 | Damian Louganis# | .4500 | 2025-2025 | |
| 71 | Ellis Stockdale# | .4500 | 2026-2026 | |
| 74 | Shawn Cummins# | .4485 | 2021-2024 | |
| 75 | Shane Meade | .4474 | 2020-2020 | |
| 76 | Jonathan Barnes | .4468 | 2013-2013 | |
| 77 | Mike Land | .4444 | 2019-2020 | |
| 78 | Oliver Pinches# | .4417 | 2022-2025 | |
| 79 | Manuel Baldivía | .4412 | 2024-2024 | |
| 80 | Michael Gilliland | .4397 | 2019-2021 | |
| 81 | Lee Smith# | .4390 | 2027-2027 | |
| 82 | Abid Alamdar# | .4375 | 2024-2024 | |
| 82 | Hsui-chen Shui# | .4375 | 2026-2026 | |
| 84 | Michael Warren# | .4359 | 2018-2018 | |
| 85 | Yasujiro Uchiyama | .4340 | 2019-2021 | |
| 86 | Shaun Sharp# | .4333 | 2026-2027 | |
| 87 | Billy Bishop# | .4314 | 2014-2019 | |
| 88 | Bhavsar Jayasurya# | .4286 | 2024-2025 | |
| 89 | Takanori Higashi | .4259 | 2013-2013 | |
| 90 | Raúl Guzmán | .4231 | 2020-2024 | |
| 91 | António Álvarez | .4222 | 2015-2019 | |
| 92 | Masahiro Chikafuji# | .4198 | 2026-2027 | |
| 93 | Yoshino Okabe | .4167 | 2015-2017 | |
| 94 | Teh-huai Thum# | .4146 | 2022-2024 | |
| 95 | Carlos Beltrán | .4118 | 2020-2020 | |
| 96 | Daniel Dorsey | .4103 | 2018-2018 | |
| 97 | Chandler Eckard# | .4098 | 2024-2025 | |
| 98 | Michel Gérard# | .4048 | 2016-2016 | |
| 98 | Sozen Watanabe# | .4048 | 2025-2027 | |
| 100 | Dong Cheng | .4043 | 2015-2019 |
