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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | SLG | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Mark Stanley# | .4774 | 2015 | |
| 2 | Mike Rodríguez# | .4433 | 2015 | |
| 3 | Juan Ortíz# | .4391 | 2015 | |
| 4 | Rick Terry# | .4244 | 2015 | |
| 5 | Bob Arrington# | .4221 | 2015 | |
| 6 | Vaughn Meléndez# | .4180 | 2015 | |
| 7 | Doug Hill# | .4167 | 2015 | |
| 8 | José Rodríguez# | .4050 | 2015 | |
| 9 | Nick Trevenot# | .3724 | 2015 | |
| 10 | Matt Crowley# | .3611 | 2015 | |
| 11 | Robert Robertson# | .3356 | 2015 | |
| 12 | Lee Collins# | .3014 | 2015 |
