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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | EFF | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Ray Sears* | 1.059 | 2013-2028 | |
| 2 | Ed Hopkins | 1.050 | 2018-2027 | |
| 3 | Richard Jost# | 1.049 | 2029-2044 | |
| 4 | Bartolo Morales | 1.048 | 2022-2038 | |
| 5 | Arturo Rodríguez | 1.036 | 2026-2038 | |
| 6 | Matt Sheppard | 1.035 | 2019-2032 | |
| 7 | Derek Corbin | 1.032 | 2038-2042 | |
| 7 | Juan Jose Ayala | 1.032 | 2025-2041 | |
| 9 | Sake van Arem | 1.030 | 2023-2041 | |
| 10 | Melvin Thomas# | 1.025 | 2035-2044 | |
| 11 | Dennis Wacher# | 1.022 | 2034-2043 | |
| 12 | Shimei Miura | 1.020 | 2033-2043 | |
| 13 | David Edwards | 1.014 | 2019-2035 | |
| 13 | Orlando Velásquez# | 1.014 | 2029-2044 | |
| 15 | Hugh Mungus | 1.012 | 2027-2044 | |
| 16 | Yu-zeng Si | 1.009 | 2032-2041 | |
| 17 | Domingo García | 1.008 | 2017-2024 | |
| 18 | Nate Cates | 1.004 | 2016-2028 | |
| 19 | Brian O'Brian | 1.003 | 2013-2022 | |
| 20 | António Martínez* | 1.000 | 2024-2037 | |
| 21 | Yataro Kodo | 0.997 | 2028-2035 | |
| 22 | Billy Dotson# | 0.996 | 2030-2044 | |
| 23 | Gabriel Rodríguez | 0.988 | 2018-2029 | |
| 24 | Ryder Ringor# | 0.987 | 2037-2044 | |
| 24 | António Macías# | 0.987 | 2040-2044 | |
| 26 | Phil Moore | 0.985 | 2032-2041 | |
| 27 | Guillermo Coss# | 0.981 | 2029-2044 | |
| 28 | Bob Campbell | 0.979 | 2014-2025 | |
| 29 | Carlos Mendoza# | 0.973 | 2035-2043 | |
| 29 | Tamasaburo Kato | 0.973 | 2021-2037 | |
| 31 | Jorge Alejándrez | 0.969 | 2027-2041 | |
| 32 | Cristo González | 0.968 | 2022-2033 | |
| 33 | Herman Hayes | 0.964 | 2015-2029 | |
| 34 | Julián De Paz | 0.943 | 2031-2035 |
