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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | EFF | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Francis Brimble# | 1.064 | 2026-2030 | |
| 2 | Luis Robert# | 1.020 | 2022-2024 | |
| 3 | Ronald Acuna Jr.# | 1.014 | 2020-2022 | |
| 4 | José Moya# | 1.000 | 2025-2028 |
