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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | EFF | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Ben Weeks | 1.110 | 2013-2021 | |
| 2 | Oliver Hernández | 1.081 | 2022-2032 | |
| 3 | Manny Ávila | 1.076 | 2009-2027 | |
| 4 | Steven Parker | 1.062 | 2016-2023 | |
| 5 | José Flores | 1.058 | 2022-2026 | |
| 6 | Alejandro Limia | 1.034 | 2047-2059 | |
| 7 | Alfredo Aguilar | 1.027 | 2020-2024 | |
| 8 | Jimmy Bigelow | 1.025 | 2051-2057 | |
| 9 | Johan Dijkman | 1.022 | 2039-2043 | |
| 10 | Alvin Dickinson | 1.010 | 2030-2044 | |
| 11 | Juan Lizarazo | 1.008 | 2050-2057 | |
| 12 | Pat MacRurie | 1.007 | 2040-2045 | |
| 13 | Tom Jacobs# | 1.005 | 2051-2062 | |
| 14 | Juan Martínez | 1.002 | 2042-2052 | |
| 15 | Robb Stark | 1.001 | 2016-2030 | |
| 16 | Arnold Norris# | 1.000 | 2046-2053 | |
| 17 | Carlos Rangel | 0.999 | 2042-2055 | |
| 17 | Ángel Pérez | 0.999 | 2018-2029 | |
| 19 | Suk-min Cho | 0.991 | 2047-2060 | |
| 20 | Enrique Martínez | 0.989 | 2047-2053 | |
| 20 | Arnold Campos | 0.989 | 2049-2057 | |
| 22 | Pierangelo Ferri | 0.987 | 2042-2056 | |
| 23 | Ramón Castro | 0.985 | 2042-2050 | |
| 24 | Francisco Rocel | 0.966 | 2034-2040 | |
| 25 | Israel Cruz | 0.959 | 2020-2026 | |
| 26 | Arturo Alonzo | 0.937 | 2024-2031 | |
| 27 | Rob Sullivan | 0.895 | 2018-2027 |
