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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | EFF | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Humberto Martinez# | 1.132 | 2025 | |
| 2 | Andy Rich# | 1.075 | 2025 | |
| 3 | Brent Kepler# | 1.052 | 2025 | |
| 4 | Trevor Mighill# | 1.014 | 2025 | |
| 5 | Frank Potthoff# | 0.912 | 2025 | |
| 6 | Kerry Blanton# | 0.910 | 2025 |
