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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | EFF | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Kazunari Ito# | 1.025 | 2028-2040 | |
| 2 | Carlos Rivas# | 1.024 | 2032-2040 | |
| 3 | Andy Lee# | 1.022 | 2032-2039 | |
| 4 | Leland Vaughn | 1.017 | 2024-2033 | |
| 5 | Bruce Miller | 1.014 | 2024-2028 | |
| 6 | Álex Valdés# | 1.002 | 2026-2040 | |
| 7 | Walter Daniel# | 1.001 | 2036-2040 | |
| 8 | Donald Mitchell | 1.000 | 2025-2036 | |
| 9 | Bob Blanchard | 0.998 | 2032-2036 | |
| 10 | Joe Barton | 0.993 | 2024-2032 | |
| 11 | Cisco Alemán# | 0.983 | 2035-2039 | |
| 12 | Mushanokoji Matsumoto | 0.982 | 2032-2036 | |
| 13 | Tomiji Sato | 0.900 | 2024-2030 |
