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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | SLG | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Steve Kleinberg# | .5112 | 1952-1955 | |
| 2 | Justin Mays# | .5082 | 1952-1954 | |
| 3 | Mike Strauss# | .4776 | 1952-1954 | |
| 4 | Haruyoshi Chikasuye# | .4702 | 1952-1954 | |
| 5 | Bosko Racic# | .4592 | 1952-1955 | |
| 6 | Arman Igumentsev# | .4563 | 1952-1954 | |
| 7 | Takeichi Tamura# | .4552 | 1952-1955 |
