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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | EFF | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Ye Der | 1.065 | 2015-2029 | |
| 2 | Roberto Salazar# | 1.061 | 2018-2031 | |
| 3 | Dave Ash# | 1.042 | 2023-2031 | |
| 4 | Emílio Sáenz | 1.016 | 2014-2025 | |
| 5 | Júlio Maldonado | 1.008 | 2020-2025 | |
| 6 | Mike Gardner# | .996 | 2018-2032 | |
| 7 | Alfredo Martínez# | .981 | 2025-2032 | |
| 8 | Rick Mayfield# | .980 | 2027-2032 | |
| 9 | Steve Ingram | .967 | 2014-2029 | |
| 10 | James Murray | .963 | 2015-2022 | |
| 11 | Rafael Sánchez# | .959 | 2025-2032 |
