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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | EFF | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Anthony Johnston# | 1.030 | 2020-2029 | |
| 2 | Mike Burns# | 1.028 | 2022-2030 | |
| 3 | Martín Martínez# | 1.023 | 2023-2029 | |
| 4 | Jack Weber | 1.019 | 2015-2023 | |
| 4 | Dave King# | 1.019 | 2014-2026 | |
| 6 | Tomás Gonzáles | 1.018 | 2014-2019 | |
| 7 | Chris Etheridge# | 1.017 | 2026-2030 | |
| 8 | Noel Ballard# | 1.004 | 2015-2028 | |
| 9 | Harry Fuller | 1.003 | 2014-2025 | |
| 10 | Hank Wilder# | .995 | 2019-2030 | |
| 11 | Ed Anderson | .992 | 2016-2025 | |
| 12 | Carlos Maldonado# | .991 | 2025-2030 | |
| 12 | Robby Day# | .991 | 2021-2030 | |
| 12 | Kumanosuke Abe# | .991 | 2022-2029 | |
| 15 | Lúcio Montoya | .989 | 2017-2022 | |
| 16 | Lawrence Washington | .986 | 2015-2025 | |
| 17 | Danny Spencer | .984 | 2014-2017 | |
| 18 | Gustavo Fuentes | .983 | 2020-2024 | |
| 19 | Wes Bradley# | .980 | 2021-2027 |
