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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | EFF | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Billy Hufnagel | 1.100 | 2016-2019 | |
| 2 | Austin Dean | 1.082 | 2010-2014 | |
| 3 | Alan Piatt | 1.055 | 2022-2026 | |
| 4 | Nelson Sanchez | 1.052 | 2009-2013 | |
| 5 | Heriberto Carrillo | 1.043 | 2017-2024 | |
| 6 | Rogelilo Mota | 1.042 | 2044-2051 | |
| 7 | Sergio Guerrero | 1.037 | 2019-2025 | |
| 8 | Byram Lombardi | 1.035 | 2038-2042 | |
| 9 | Danny Lydick | 1.034 | 2009-2013 | |
| 10 | Orlando Soto | 1.032 | 2011-2017 | |
| 11 | Vinny Haney | 1.031 | 2007-2011 | |
| 11 | Eddie Hancock | 1.031 | 2024-2028 | |
| 13 | Juan Gunzalez | 1.030 | 2006-2009 | |
| 14 | Jim Porterfield | 1.027 | 2025-2029 | |
| 15 | Victor Rangel | 1.023 | 2024-2031 | |
| 16 | Joey Woods | 1.016 | 2038-2043 | |
| 17 | Diego Castrejon | 1.009 | 2037-2042 | |
| 18 | Shawn Wilson# | 1.000 | 2054-2058 | |
| 19 | Russell Armstrong | 0.999 | 2019-2023 | |
| 20 | Tom Albano | 0.993 | 2029-2034 | |
| 21 | Zak French | 0.992 | 2034-2037 | |
| 22 | Kyle Hudson | 0.970 | 2053-2056 |
