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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | EFF | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Chris Williamson# | 1.075 | 2023-2029 | |
| 2 | Félix Pérez | 1.064 | 2017-2022 | |
| 3 | Dave Knight | 1.061 | 2015-2028 | |
| 4 | Wook-jin Pae | 1.048 | 2015-2023 | |
| 5 | Carlos Kramer# | 1.036 | 2021-2026 | |
| 6 | Jorge Barrios# | 1.035 | 2025-2031 | |
| 7 | Mike Gardner# | 1.021 | 2021-2031 | |
| 8 | Gerald Holloway | .976 | 2020-2023 | |
| 8 | Dani Trejo# | .976 | 2024-2031 | |
| 10 | Avon Barksdale# | .971 | 2024-2030 | |
| 11 | Cliff Aldridge# | .970 | 2022-2028 | |
| 12 | John Holbrook | .966 | 2015-2019 | |
| 13 | Alfredo Martínez# | .962 | 2028-2030 | |
| 14 | Sinclair van Kooten | .958 | 2017-2026 | |
| 15 | Robert O'Connor | .954 | 2018-2030 | |
| 16 | Melvin Castro# | .934 | 2019-2030 | |
| 17 | Jorge Mojica# | .919 | 2021-2031 | |
| 18 | Martín Núñes | .908 | 2023-2025 | |
| 19 | Wilfrid Savary | .905 | 2015-2022 | |
| 20 | Robbie Roach | .888 | 2016-2028 |
