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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | EFF | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Félix López# | 1.100 | 2021-2030 | |
| 2 | Noel Livingston | 1.072 | 2015-2020 | |
| 3 | Teruo Nakayama | 1.047 | 2023-2026 | |
| 4 | Iván Pérez | 1.032 | 2017-2025 | |
| 5 | Juan Orozco | 1.026 | 2015-2023 | |
| 6 | Enrique Pérez | 1.025 | 2018-2029 | |
| 7 | Scotty Anderson# | 1.018 | 2022-2029 | |
| 8 | Jason Alexander# | 1.008 | 2024-2028 | |
| 9 | Jeff Young# | 1.005 | 2019-2029 | |
| 9 | Randy Rehling# | 1.005 | 2023-2030 | |
| 11 | Mario Castillo# | .989 | 2023-2030 | |
| 12 | Edwin Church# | .986 | 2020-2030 | |
| 13 | Jorge Colomo | .981 | 2017-2029 | |
| 14 | Vicente Martínez | .978 | 2015-2020 | |
| 15 | Gustavo Cortéz# | .975 | 2023-2030 | |
| 16 | Chandler Bailey# | .969 | 2017-2025 | |
| 17 | Don Brown* | .959 | 2014-2018 | |
| 18 | Steve Dunn | .933 | 2018-2028 | |
| 19 | Carlos Padilla# | .905 | 2024-2030 | |
| 20 | Gilberto Juárez# | .812 | 2028-2030 |
