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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | SLG | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Jim Keller | .5759 | 2024-2035 | |
| 2 | Stephen Marshall | .5406 | 2037-2043 | |
| 3 | Bob Miner | .5268 | 2024-2035 | |
| 4 | Tomoyuki Tanaka | .4710 | 2037-2050 | |
| 5 | Jimmy Ratzlaff | .4631 | 2029-2035 | |
| 6 | Joey Huff | .4183 | 2033-2035 | |
| 7 | Mariano Castro | .3873 | 2036-2039 | |
| 8 | Won-shik Chong | .3862 | 2034-2038 | |
| 9 | Ernie Graves# | .3768 | 2045-2049 | |
| 10 | Jason Walden# | .3556 | 2046-2048 | |
| 11 | Marcus Dickey# | .3209 | 2045-2048 |
