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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | EFF | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Andre Dixon | 1.041 | 2016-2019 | |
| 2 | Bernardo Herrera# | 1.036 | 2019-2029 | |
| 3 | Francisco González | 1.031 | 2013-2020 | |
| 4 | Tim Barnes | 1.022 | 2017-2027 | |
| 5 | Eiji Suzuki | 1.020 | 2016-2024 | |
| 6 | Bob Heller | 1.016 | 2015-2026 | |
| 7 | Ki-tak Im# | 1.010 | 2024-2030 | |
| 7 | Thom Wilcox | 1.010 | 2013-2028 | |
| 9 | Jorge Trevino | 1.006 | 2019-2026 | |
| 10 | Juan Cabrera# | 1.002 | 2015-2030 | |
| 11 | Tamasaburo Kato# | 1.000 | 2021-2030 | |
| 12 | Raúl Ortíz# | .997 | 2025-2030 | |
| 12 | Brent Gaines | .997 | 2013-2018 | |
| 14 | Noel Ballard# | .996 | 2017-2030 | |
| 15 | Bob Campbell | .993 | 2014-2025 | |
| 16 | Nathan Horton# | .987 | 2017-2026 | |
| 17 | Travis Newsome# | .975 | 2020-2029 | |
| 18 | Gerald Shaw | .958 | 2013-2016 | |
| 19 | Andrés Rodríguez# | .924 | 2020-2030 | |
| 19 | Yoshio Matsuo | .924 | 2015-2025 |
