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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | EFF | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Phil Ackerman | 1.123 | 2012-2016 | |
| 2 | Leroy Ferguson | 1.083 | 2014-2017 | |
| 3 | Jesse Boyd | 1.081 | 2006-2015 | |
| 4 | Juan Baca | 1.071 | 2029-2035 | |
| 5 | Eric Foster | 1.068 | 2029-2033 | |
| 6 | Héctor Valdés | 1.066 | 2043-2047 | |
| 7 | Todd Mitchell | 1.055 | 2027-2038 | |
| 8 | Dennis Adkins | 1.054 | 2022-2027 | |
| 9 | Ernesto González | 1.053 | 2040-2047 | |
| 10 | Seu Sin# | 1.051 | 2053-2058 | |
| 11 | Albert Hernández | 1.048 | 2022-2033 | |
| 12 | David Muñíz | 1.046 | 2029-2039 | |
| 12 | Kenzaburo Tanaka | 1.046 | 2037-2046 | |
| 14 | Carl Eassson# | 1.045 | 2048-2052 | |
| 15 | Hughie Stowe | 1.040 | 2041-2045 | |
| 15 | Jin-hwan Kim# | 1.040 | 2046-2048 | |
| 15 | Mauro López | 1.040 | 2032-2037 | |
| 18 | Charles Baxter | 1.038 | 2038-2043 | |
| 19 | Wallace Dean | 1.034 | 2032-2037 | |
| 20 | Daniel Lachapelle | 1.032 | 2037-2040 | |
| 21 | Donald Gray | 1.031 | 2039-2047 | |
| 22 | Randy Knight | 1.027 | 2033-2038 | |
| 23 | Najib Fakih# | 1.026 | 2050-2055 | |
| 24 | Vinnie Baker | 1.025 | 2048-2053 | |
| 24 | Gerardo López | 1.025 | 2031-2035 | |
| 26 | Kelly Alfons | 1.022 | 2032-2039 | |
| 27 | Theodore English | 1.016 | 2044-2049 | |
| 27 | Juan De La Cruz | 1.016 | 2041-2045 | |
| 29 | José Delgado | 1.015 | 2039-2042 | |
| 29 | Stephen Terry | 1.015 | 2035-2038 | |
| 29 | Víctor Galló | 1.015 | 2040-2050 | |
| 32 | Tim Miner | 1.013 | 2031-2044 | |
| 33 | Orlando Díaz | 1.010 | 2037-2040 | |
| 33 | Emílio León | 1.010 | 2035-2044 | |
| 35 | Terry Rowland | 1.009 | 2037-2053 | |
| 36 | Steve Hooper | 1.007 | 2049-2051 | |
| 37 | César Cuevas | 1.004 | 2053-2057 | |
| 38 | Charles Glynn | 0.998 | 2049-2054 | |
| 39 | Randy Guerin | 0.996 | 2044-2049 | |
| 39 | Hajjaj Wadi | 0.996 | 2051-2053 | |
| 41 | Francisco López | 0.988 | 2037-2043 | |
| 42 | Arthur Carnini | 0.986 | 2039-2042 | |
| 43 | Abdul-Azim Rais | 0.980 | 2039-2043 | |
| 44 | Alfredo Gallegos | 0.978 | 2042-2047 | |
| 45 | Héctor Trejo | 0.974 | 2035-2040 | |
| 46 | Reijiro Taketo | 0.963 | 2037-2041 |
