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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | SLG | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Jason Coffman# | .5917 | 1987 | |
| 2 | Guillermo Reyes# | .5711 | 1984 | |
| 3 | Tad Gill# | .5584 | 1987 | |
| 4 | Guillermo Reyes# | .5468 | 1982 | |
| 5 | Mike Pryor# | .5309 | 1985 | |
| 6 | Charles Messer# | .5214 | 1987 | |
| 7 | Kyle Bailey# | .5149 | 1983 | |
| 8 | Kyle Bailey# | .5128 | 1981 | |
| 9 | Kyle Bailey# | .5110 | 1982 | |
| 10 | Charles Messer# | .5026 | 1985 | |
| 11 | Jim Lake# | .5012 | 1983 | |
| 12 | Al Jackson# | .5000 | 1984 | |
| 13 | António Marte# | .4976 | 1985 | |
| 14 | Jim Lake# | .4949 | 1981 | |
| 15 | Tad Gill# | .4836 | 1986 | |
| 16 | Jim Lake# | .4711 | 1982 | |
| 17 | Guillermo Reyes# | .4696 | 1983 | |
| 18 | Roberto Fernández# | .4674 | 1987 | |
| 19 | António Marte# | .4612 | 1986 | |
| 20 | Mike Pryor# | .4489 | 1986 | |
| 21 | Júlio Otero | .4460 | 1981 | |
| 22 | Alberto Zambrano# | .4448 | 1984 | |
| 23 | Guillermo Reyes# | .4354 | 1985 | |
| 24 | Guillermo Reyes# | .4220 | 1981 | |
| 25 | Kyle Bailey# | .4090 | 1986 | |
| 26 | Júlio Otero | .4005 | 1982 | |
| 27 | Charles Messer# | .3937 | 1986 | |
| 28 | Kyle Bailey# | .3934 | 1984 | |
| 29 | António Marte# | .3913 | 1984 | |
| 30 | Kyle Bailey# | .3707 | 1985 | |
| 31 | Mike Pryor# | .3690 | 1982 | |
| 32 | José Guzmán# | .3571 | 1985 | |
| 33 | Bob Hutchison | .3545 | 1984 | |
| 34 | Gregory Metoyer# | .3088 | 1987 |
