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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | EFF | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Sean Davis | 1.064 | 2017-2030 | |
| 2 | David Martínez | 1.056 | 2015-2028 | |
| 3 | Ted Young | 1.055 | 2015-2023 | |
| 4 | Arturo Guzmán | 1.048 | 2015-2021 | |
| 5 | Mesa Altuve# | 1.036 | 2028-2032 | |
| 6 | Luis Luquín# | 1.032 | 2029-2032 | |
| 7 | Guillermo Montoya | 1.028 | 2016-2021 | |
| 8 | Locke Lamora# | 1.027 | 2028-2030 | |
| 9 | Vincent Crane# | 1.022 | 2024-2032 | |
| 10 | Eugene Parrish | 1.017 | 2015-2024 | |
| 11 | Elian Gonzalez# | 1.015 | 2030-2032 | |
| 11 | Kunimichi Chikafuji# | 1.015 | 2024-2030 | |
| 11 | Randy Bowen | 1.015 | 2022-2027 | |
| 14 | Cam MacIntosh# | 1.007 | 2030-2032 | |
| 15 | Joe Craig | 1.003 | 2023-2032 | |
| 16 | Mark McClear | 1.002 | 2015-2029 | |
| 17 | Pablo Marrero# | 1.001 | 2027-2032 | |
| 18 | Forrest McCooke | 1.000 | 2021-2027 | |
| 19 | Arnold Griffith | .993 | 2015-2025 | |
| 20 | Kumanosuke Abe | .985 | 2024-2032 | |
| 21 | Pedro Cruz | .984 | 2016-2022 | |
| 21 | Jesús Cabañe# | .984 | 2022-2031 | |
| 23 | António González# | .976 | 2024-2032 | |
| 23 | Mario Álvarez# | .976 | 2028-2032 | |
| 25 | Hank Wilder# | .971 | 2024-2029 | |
| 26 | Arnold Giroux# | .967 | 2027-2032 | |
| 26 | Royce Smith | .967 | 2015-2018 |
