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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | SLG | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Mike Brown# | .4690 | 2019 | |
| 2 | Pablo León# | .4645 | 2017 | |
| 3 | George McDonald# | .4614 | 2016 | |
| 4 | Duncan Thomas# | .4565 | 2018 | |
| 5 | Gonzalo López# | .4548 | 2019 | |
| 6 | José Meléndez# | .4430 | 2017 | |
| 7 | Raykom Mikeladze# | .4331 | 2015 | |
| 8 | Júlio Morín# | .4310 | 2018 | |
| 9 | Cole Shaffer# | .4124 | 2018 | |
| 10 | Francisco González# | .4012 | 2016 | |
| 11 | Miguel Ramírez# | .3994 | 2015 | |
| 12 | Pablo León# | .3914 | 2016 | |
| 13 | Jeff Bass# | .3907 | 2019 | |
| 14 | Jayson Parsons | .3823 | 2015 | |
| 15 | Yoshio Matsuo# | .3675 | 2016 | |
| 16 | John Allen# | .3587 | 2018 | |
| 17 | Derek Schroeder# | .3581 | 2015 | |
| 18 | Jean Pronk# | .3536 | 2016 | |
| 19 | Vance Cannon# | .3524 | 2017 | |
| 20 | Raykom Mikeladze# | .3476 | 2017 | |
| 21 | Hal Romaine# | .3459 | 2018 | |
| 22 | Eric Russell | .3449 | 2015 | |
| 23 | Pedro Cruz# | .3444 | 2018 | |
| 24 | Soseki Matsunaga# | .3352 | 2019 | |
| 25 | Jim Browning# | .3333 | 2015 | |
| 26 | Melvin Baldwin | .3280 | 2015 | |
| 27 | David Edwards# | .3247 | 2019 | |
| 28 | Vance Cannon# | .3232 | 2018 | |
| 29 | Wayne Harrison# | .3182 | 2015 | |
| 30 | Trevor Gardner# | .3072 | 2015 | |
| 31 | Wayne Harrison# | .2857 | 2018 | |
| 32 | Thomas Dunlap# | .2692 | 2018 | |
| 33 | Derek Schroeder# | .2557 | 2016 |
