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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | SLG | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Sadakuno Matsumoto | .5854 | 2022 | |
| 2 | Rick Giammarino# | .5339 | 2030 | |
| 3 | Jun Ogura# | .5307 | 2031 | |
| 4 | Richard Richards | .5059 | 2020 | |
| 5 | Drake Ramsey# | .4944 | 2029 | |
| 6 | Mario Romero | .4867 | 2024 | |
| 7 | Doug Turner | .4843 | 2028 | |
| 8 | Masami Tanaka | .4836 | 2021 | |
| 9 | Hidehira Ohayashi# | .4680 | 2027 | |
| 10 | Armando Sosa | .4663 | 2021 | |
| 11 | Kyle Higgins# | .4648 | 2034 | |
| 12 | Stanley Bounds | .4525 | 2021 | |
| 13 | Jeff Ayers# | .4511 | 2032 | |
| 14 | José Flores# | .4465 | 2023 | |
| 15 | Waylon Swerdlow# | .4457 | 2032 | |
| 16 | Nick Jacobson | .4427 | 2015 | |
| 17 | Jonathan Padilla# | .4411 | 2033 | |
| 18 | Matthew Robinson | .4369 | 2026 | |
| 19 | Ernesto Santiago# | .4358 | 2033 | |
| 20 | Matthew Robinson | .4357 | 2025 | |
| 21 | Valentín Velasco | .4331 | 2023 | |
| 22 | Conceição Loff | .4292 | 2016 | |
| 23 | Takafumi Nomura | .4268 | 2015 | |
| 24 | Donald Buchanan# | .4249 | 2023 | |
| 25 | Sabino Acosta# | .4152 | 2033 | |
| 26 | Patrick Brunet# | .4134 | 2025 | |
| 27 | Edward Ilett | .4133 | 2026 | |
| 28 | Masami Tanaka | .4127 | 2020 | |
| 29 | Tama Loa# | .4108 | 2034 | |
| 30 | Earl Joyner | .4106 | 2023 | |
| 31 | Sean Clare# | .4087 | 2023 | |
| 32 | Manuel Rivera | .4077 | 2018 | |
| 33 | Devon LeBrecht# | .4072 | 2034 | |
| 34 | Martín Torres | .4068 | 2018 | |
| 35 | Albin Disanti | .4055 | 2017 | |
| 36 | Carlton Jackson# | .4048 | 2027 | |
| 37 | Ramon Abreu# | .3993 | 2033 | |
| 38 | Salvador Mata# | .3980 | 2018 | |
| 39 | Antonio Santana# | .3973 | 2033 | |
| 40 | Conceição Loff | .3967 | 2015 | |
| 41 | Hai-dong Szema# | .3966 | 2031 | |
| 42 | Moo-hyun Boone# | .3935 | 2030 | |
| 42 | Jesús Silva | .3935 | 2012 | |
| 44 | Marvin Etheridge | .3931 | 2027 | |
| 45 | Arturo León | .3919 | 2015 | |
| 46 | Graham Armstrong# | .3914 | 2032 | |
| 47 | Otte Noordijk | .3908 | 2022 | |
| 48 | Yeong-suk Ha# | .3903 | 2029 | |
| 49 | Octávio Guzmán# | .3901 | 2031 | |
| 49 | Frankie Zufeltini# | .3901 | 2029 | |
| 51 | Matthew Robinson | .3893 | 2027 | |
| 52 | Ron Matthews | .3889 | 2027 | |
| 53 | Yaichiro Yokoyama# | .3883 | 2025 | |
| 54 | Takeo Watanabe | .3846 | 2022 | |
| 55 | Armando Sosa | .3835 | 2020 | |
| 56 | Masahiro Chikafuji | .3825 | 2021 | |
| 57 | Bill Hoover | .3824 | 2012 | |
| 58 | Michael Hill | .3799 | 2021 | |
| 59 | José Flores# | .3797 | 2022 | |
| 60 | James McKeamish | .3773 | 2020 | |
| 61 | Bennie Hanna | .3752 | 2016 | |
| 62 | Rodrigo Alagna | .3730 | 2022 | |
| 63 | Damian Louganis | .3724 | 2022 | |
| 64 | Sadakuno Matsumoto | .3704 | 2021 | |
| 65 | Shusaku Sugiyama | .3699 | 2016 | |
| 66 | Bill Locke | .3677 | 2026 | |
| 67 | Artie Hart | .3648 | 2019 | |
| 67 | Augusto Reyes# | .3648 | 2030 | |
| 69 | Joong Guang | .3645 | 2019 | |
| 70 | Masami Tanaka | .3641 | 2019 | |
| 71 | Dong Kan# | .3620 | 2023 | |
| 72 | Paul Frank | .3618 | 2018 | |
| 73 | Jaikirti Kumawagra | .3612 | 2023 | |
| 74 | Francisco Hernández# | .3608 | 2034 | |
| 75 | Xun Choe# | .3605 | 2031 | |
| 76 | Seitaro Yamada | .3599 | 2021 | |
| 77 | Reece Wager# | .3598 | 2026 | |
| 78 | Soseki Aoki | .3571 | 2019 | |
| 79 | Sean Clare# | .3564 | 2022 | |
| 80 | Tim Cummings | .3562 | 2017 | |
| 81 | Albin Disanti | .3556 | 2018 | |
| 82 | Asmara Layar | .3552 | 2022 | |
| 83 | Alejandro Sandoval# | .3546 | 2032 | |
| 84 | Tim Woodley | .3542 | 2029 | |
| 85 | Kol-in-sen Lu | .3511 | 2022 | |
| 86 | Iosif Gaichuk | .3505 | 2026 | |
| 87 | Jeff Henson# | .3472 | 2034 | |
| 88 | Jaikirti Kumawagra | .3464 | 2022 | |
| 89 | Sean Childers | .3433 | 2016 | |
| 90 | Earl Joyner | .3419 | 2022 | |
| 91 | Shi-kai Tsu# | .3408 | 2026 | |
| 92 | Yoriyuki Tanaka# | .3400 | 2026 | |
| 93 | Martín Hernández | .3394 | 2020 | |
| 94 | Artie Hart | .3383 | 2020 | |
| 95 | Milt Mezzanotte# | .3382 | 2029 | |
| 96 | Wiley Atherton# | .3378 | 2026 | |
| 97 | Kiemon Matsunaga# | .3373 | 2026 | |
| 98 | Freddie Parker | .3367 | 2016 | |
| 99 | Nick Robertson | .3353 | 2014 | |
| 100 | Phil Parker# | .3352 | 2028 |
