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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | EFF | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Luis Alonso | 1.056 | 2012-2021 | |
| 2 | Humberto Padilla | 1.046 | 2024-2036 | |
| 3 | Travis Lenore | 1.041 | 2036-2044 | |
| 4 | Tim Ireland | 1.029 | 2025-2033 | |
| 5 | Sergio Cordero | 1.026 | 2004-2013 | |
| 6 | Lou Wright | 1.021 | 2022-2033 | |
| 7 | Wil Estrada | 1.020 | 2018-2027 | |
| 8 | Juan Caban | 1.018 | 2005-2009 | |
| 8 | Jon Diaz | 1.018 | 2030-2044 | |
| 10 | Brent Woodruff | 1.014 | 2024-2029 | |
| 11 | Adrian Llorenti | 1.010 | 2026-2036 | |
| 12 | Jonas Aguillon# | 1.006 | 2046-2050 | |
| 13 | Matt Crisafi | 1.005 | 2030-2036 | |
| 14 | Peter Meyer | 1.003 | 2032-2044 | |
| 14 | Brennan Beam | 1.003 | 2008-2015 | |
| 16 | Alex Aybar | 1.002 | 2024-2037 | |
| 17 | Nate Lozano | 1.000 | 2006-2016 | |
| 18 | Itsuto Ohira | 0.998 | 2024-2033 | |
| 19 | Steve Berman | 0.992 | 2017-2026 | |
| 20 | Chase Hamilton | 0.991 | 2023-2033 | |
| 21 | Brian Hughes | 0.990 | 2012-2020 | |
| 21 | Ji-Hyeok Pil | 0.990 | 2037-2046 | |
| 23 | Chris Flores | 0.989 | 2027-2039 | |
| 23 | Ron Sandoval | 0.989 | 2040-2045 | |
| 25 | Justin Draper | 0.987 | 2017-2021 | |
| 25 | Samuel Turton | 0.987 | 2015-2026 | |
| 27 | Lúcio Esmnia | 0.985 | 2029-2045 | |
| 28 | Ken Kellogg | 0.983 | 2010-2017 | |
| 29 | Harry Blackwell | 0.975 | 2009-2012 | |
| 30 | Júlio Duran | 0.973 | 2038-2046 | |
| 31 | Manuel Arroyos | 0.970 | 2028-2037 | |
| 32 | David Galbraith | 0.962 | 2030-2040 | |
| 33 | Emilio Pulido | 0.961 | 2029-2042 | |
| 34 | Gustavo Olivares | 0.951 | 2033-2044 |
