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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OPS | YEAR | Open Postseason Leaderboard |
|---|---|---|---|---|
| 1 | Aftab Mengal | 1.895 | 2020-2025 | |
| 2 | Danny Dunlap# | 1.205 | 2031-2034 | |
| 3 | Kol-in-sen Koo# | 1.092 | 2032-2034 | |
| 4 | Tamotsu Yamashita | 1.008 | 2023-2026 | |
| 5 | Dustin Adkinson# | .959 | 2032-2034 | |
| 6 | Katsumoto Mori | .945 | 2025-2026 | |
| 7 | Tetsuya Toyoda# | .942 | 2032-2034 | |
| 8 | Toshimitsu Epps# | .941 | 2032-2034 | |
| 9 | Hayaki Shinozaki# | .848 | 2032-2034 | |
| 10 | Kazuhiko Kai# | .820 | 2032-2034 | |
| 11 | Hoang Kieu# | .818 | 2022-2024 | |
| 12 | Fu-po Tseng | .793 | 2025-2026 | |
| 13 | Morihiro Yamasaki# | .722 | 2024-2027 | |
| 14 | Yasujiro Iitsuka | .637 | 2025-2026 | |
| 15 | Teruo Suzuki | .585 | 2025-2026 | |
| 16 | Min-u Kym# | .532 | 2032-2034 | |
| 17 | Minehiro Nishida# | .501 | 2030-2034 |
