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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | SLG | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Santiago Mejía | .4750 | 1978-1988 | |
| 2 | Raúl Cruz | .4414 | 1978-1989 | |
| 3 | Juan Pérez | .4216 | 1948-1955 | |
| 4 | Kent Rodríguez Jr.# | .4215 | 1986-1991 |
