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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | EFF | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Mario Nieves# | 1.120 | 2025-2030 | |
| 2 | Dan Holliday | 1.047 | 2016-2024 | |
| 3 | Gilbert Graham# | 1.043 | 2024-2030 | |
| 4 | Pedro Rivera# | 1.021 | 2025-2028 | |
| 5 | Mike Cook# | .959 | 2023-2030 |
