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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | SLG | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Kanzaburo Tsuchida# | .6552 | 1955-1955 | |
| 2 | Dositej Pesa# | .6279 | 1955-1955 | |
| 3 | Anatolii Sajnev# | .6000 | 1955-1957 | |
| 4 | Felix Feofilov# | .5185 | 1955-1957 | |
| 5 | Takeshi Hirose# | .4615 | 1957-1957 | |
| 6 | Ethan Chennells# | .4211 | 1955-1957 | |
| 7 | Mei-shan Xú# | .4167 | 1955-1957 | |
| 8 | Alex Martinez# | .3968 | 1955-1957 | |
| 9 | Franklin Wouters# | .3929 | 1955-1955 | |
| 10 | Georges Cariou# | .3846 | 1955-1957 | |
| 10 | Gannon McAskill# | .3846 | 1955-1957 | |
| 12 | Chia-liang Da# | .3659 | 1957-1957 | |
| 13 | Francisco Villezcas# | .3651 | 1955-1957 | |
| 14 | Paxton Boone# | .3548 | 1957-1957 | |
| 15 | Gregor Kramer# | .3448 | 1957-1957 | |
| 16 | Goris Visser# | .3125 | 1957-1957 | |
| 17 | Ivan Jimenez# | .2951 | 1955-1957 | |
| 18 | Alberto Sanchez# | .2807 | 1955-1957 | |
| 19 | Brad Beitz# | .2800 | 1955-1955 | |
| 20 | Pabiyan Azariev# | .2593 | 1955-1957 | |
| 21 | Bora Obradovic# | .2400 | 1957-1957 | |
| 22 | Luis Garcia# | .2222 | 1957-1957 | |
| 23 | Yeow-whye Eng# | .1379 | 1955-1957 | |
| 24 | Heller Koehler# | .1304 | 1955-1955 | |
| 25 | Jake Mahar# | .1250 | 1957-1957 |
