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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | SLG | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Lou Rosário | .4667 | 1996-2004 | |
| 2 | Lee McClendon | .4283 | 1988-1994 | |
| 3 | Raúl Otero | .4165 | 1960-1974 | |
| 4 | Peter Watson# | .3782 | 2005-2014 | |
| 5 | Andrew Hardy | .3544 | 1959-1973 | |
| 6 | J.R. Hale# | .3533 | 2006-2014 | |
| 7 | Manuel Valadez# | .3135 | 2007-2014 | |
| 8 | José Padilla# | .2833 | 2005-2013 | |
| 9 | Bartolo Ortega# | .2592 | 2006-2014 |
