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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | EFF | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Tim Barnes | 1.064 | 2016-2024 | |
| 2 | Mark Melton | 1.056 | 2014-2028 | |
| 3 | Ronald Shelton | 1.037 | 2015-2022 | |
| 3 | Bernardo Herrera# | 1.037 | 2019-2031 | |
| 5 | Lane Rich | 1.035 | 2015-2023 | |
| 6 | Ed Whitaker | 1.031 | 2017-2028 | |
| 7 | Hank Wilder# | 1.030 | 2019-2031 | |
| 8 | Tony Romero# | 1.029 | 2023-2031 | |
| 9 | Munemori Ohara# | 1.005 | 2020-2027 | |
| 10 | Robby Day# | 1.002 | 2021-2030 | |
| 11 | Daniel Lallanilla | .999 | 2015-2022 | |
| 12 | Frank Grimes# | .997 | 2027-2031 | |
| 13 | Bob Dickerson# | .992 | 2019-2031 | |
| 14 | Noel Ballard# | .987 | 2015-2031 | |
| 15 | Eiji Suzuki | .983 | 2017-2023 | |
| 16 | Pedro Santos# | .979 | 2022-2031 | |
| 17 | Pil-joong Pak# | .975 | 2023-2031 | |
| 18 | John Allen | .964 | 2016-2028 | |
| 19 | Donald Stanley | .958 | 2015-2022 | |
| 20 | Yoshio Matsuo | .934 | 2015-2023 |
