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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | EFF | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Derek Bangert | 1.105 | 2030-2042 | |
| 2 | Brad Perry | 1.100 | 2015-2026 | |
| 3 | Baldomero Avino# | 1.078 | 2025-2044 | |
| 4 | Jorge Alejándrez | 1.063 | 2027-2041 | |
| 5 | Chad Armstrong* | 1.060 | 2013-2029 | |
| 6 | Johan Kroening# | 1.052 | 2032-2044 | |
| 7 | Tetsu Matsumoto# | 1.047 | 2040-2044 | |
| 8 | Terry Armstrong | 1.044 | 2017-2034 | |
| 9 | Donald Thompson | 1.043 | 2016-2024 | |
| 10 | Chris Smith | 1.032 | 2013-2025 | |
| 11 | Blaze Alexander# | 1.026 | 2033-2043 | |
| 12 | Gabriel Maldonado | 1.023 | 2021-2034 | |
| 13 | Philip Visscher# | 1.016 | 2039-2044 | |
| 14 | Eddie Sachs# | 1.010 | 2032-2043 | |
| 15 | Seishiro Nishimura | 1.004 | 2023-2032 | |
| 16 | Kyoji Hakoda | 1.003 | 2030-2037 | |
| 16 | Min-heui Im | 1.003 | 2015-2026 | |
| 18 | Todd Henry | 1.000 | 2022-2031 | |
| 19 | Tadayoshi Watanabe | 0.998 | 2031-2042 | |
| 20 | Ned Durand | 0.993 | 2024-2035 | |
| 20 | Tomás Martínez | 0.993 | 2026-2036 | |
| 20 | Michael Neely | 0.993 | 2019-2029 | |
| 23 | Roberto Sánchez | 0.988 | 2025-2036 | |
| 24 | Karl Blanke# | 0.980 | 2032-2044 | |
| 25 | Kenneth Chapman | 0.968 | 2014-2021 | |
| 26 | Rubén López | 0.962 | 2017-2024 | |
| 27 | Lupo Cotto | 0.959 | 2027-2040 | |
| 28 | Mike Silver* | 0.958 | 2014-2027 | |
| 29 | Brett Callison | 0.957 | 2023-2039 | |
| 30 | Bart Lewis* | 0.954 | 2020-2036 | |
| 31 | Lockwood Rose | 0.945 | 2013-2020 | |
| 32 | Todd Blake | 0.905 | 2015-2029 | |
| 33 | John Ennis | 0.903 | 2027-2041 |
