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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | SLG | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Yoshio Matsuo# | .5700 | 2015 | |
| 2 | Nathan Horton# | .5457 | 2018 | |
| 3 | Nick McKnight | .5433 | 2014 | |
| 4 | Eiji Suzuki# | .5431 | 2020 | |
| 5 | Eiji Suzuki# | .5361 | 2019 | |
| 6 | Daniel Lallanilla# | .4896 | 2015 | |
| 7 | Jorge Trevino# | .4752 | 2019 | |
| 8 | Yoshio Matsuo# | .4732 | 2017 | |
| 9 | Noel Ballard# | .4601 | 2019 | |
| 10 | Porter Martínez | .4548 | 2019 | |
| 11 | Pablo León# | .4534 | 2015 | |
| 12 | Bob Heller# | .4495 | 2015 | |
| 13 | Jim Chaffe | .4444 | 2014 | |
| 14 | Brad Brown# | .4412 | 2018 | |
| 15 | Ronald Shelton# | .4370 | 2018 | |
| 16 | George McDonald# | .4329 | 2017 | |
| 17 | Yoshio Matsuo# | .4286 | 2018 | |
| 18 | José Meléndez# | .4236 | 2019 | |
| 19 | Mark Melton# | .4104 | 2014 | |
| 20 | Cole Shaffer# | .4031 | 2019 | |
| 21 | Ricardo Salazar | .3934 | 2015 | |
| 22 | Carlos Rodríguez# | .3929 | 2018 | |
| 23 | Donald Stanley# | .3862 | 2017 | |
| 24 | Daniel Lallanilla# | .3673 | 2017 | |
| 25 | Júlio Morín# | .3670 | 2020 | |
| 26 | Tim Barnes# | .3658 | 2016 | |
| 27 | Donald Stanley# | .3584 | 2016 | |
| 28 | Matthieu Servergnini | .3492 | 2016 | |
| 29 | Ronald Shelton# | .3472 | 2017 | |
| 30 | Mark Melton# | .3468 | 2019 | |
| 31 | Daniel Lallanilla# | .3461 | 2016 | |
| 32 | Toby Hopper | .3459 | 2015 | |
| 33 | José Lozano# | .3439 | 2017 | |
| 34 | Soseki Matsunaga# | .3426 | 2018 | |
| 35 | Joaquín Parra# | .3403 | 2020 | |
| 36 | Mark Melton# | .3278 | 2018 | |
| 37 | Ray Porch# | .3273 | 2020 | |
| 38 | Tim Barnes# | .3229 | 2017 | |
| 39 | Pedro Cruz# | .3198 | 2020 | |
| 40 | Joaquín Parra# | .3153 | 2019 | |
| 41 | Francisco Mendoza | .3096 | 2014 | |
| 42 | Mark Melton# | .2989 | 2020 | |
| 43 | Mark Melton# | .2966 | 2016 | |
| 44 | Matthieu Servergnini | .2963 | 2017 | |
| 45 | Lane Rich# | .2930 | 2016 | |
| 46 | Manny Hernández# | .2326 | 2019 |
