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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | EFF | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Luis Cedeño | 1.086 | 2017-2025 | |
| 2 | Felipe Mendoza | 1.055 | 2016-2026 | |
| 2 | Brad Bowman# | 1.055 | 2031-2035 | |
| 4 | Ángel Rodríguez# | 1.051 | 2027-2035 | |
| 5 | Fred Martin# | 1.044 | 2027-2035 | |
| 6 | Rodrigo Negrón# | 1.035 | 2027-2034 | |
| 6 | Rick Chase# | 1.035 | 2025-2035 | |
| 8 | Michel Lambert# | 1.031 | 2029-2035 | |
| 9 | Callum Gaynon | 1.018 | 2017-2027 | |
| 9 | Roberto Ferrer | 1.018 | 2013-2024 | |
| 11 | Robert Camarena | 1.014 | 2008-2021 | |
| 12 | Luis Figueroa | 1.006 | 2020-2031 | |
| 13 | Jesús Álvarez | 1.003 | 2022-2031 | |
| 14 | George Labarre | .996 | 2012-2026 | |
| 15 | Norman Kuhn# | .995 | 2021-2035 | |
| 16 | Katsuhiko Jouda | .994 | 2021-2033 | |
| 17 | Bill O'Neil | .993 | 2023-2030 | |
| 18 | Billy Cremeans | .992 | 2015-2023 | |
| 19 | Rick Bryant | .990 | 2020-2029 | |
| 20 | Enrique González# | .986 | 2026-2035 | |
| 21 | Ieyasu Suzuki | .981 | 2026-2033 | |
| 21 | Esteban Vargas# | .981 | 2027-2035 | |
| 23 | Gene Reynolds | .980 | 2020-2032 | |
| 24 | Timothy Mendiola | .979 | 2012-2026 | |
| 24 | José Vega# | .979 | 2027-2035 | |
| 26 | Jason Lefebvre | .978 | 2014-2024 | |
| 27 | Roy Nickerson# | .977 | 2026-2035 | |
| 28 | Francisco Pérez | .976 | 2017-2026 | |
| 29 | Thomas Lyons# | .955 | 2025-2035 | |
| 30 | John Grondin* | .942 | 2013-2028 | |
| 31 | Nathanael Burton | .000 | 2012-2018 | |
| 31 | Duane Gerhardt | .000 | 2008-2017 | |
| 31 | Brett Gerson | .000 | 2015-2020 | |
| 31 | Timothy Palacio | .000 | 2007-2021 | |
| 31 | Winston Satterlee | .000 | 2008-2018 | |
| 31 | Edward Weiss | .000 | 2012-2019 |
