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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | EFF | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Javier Prieto | 1.077 | 2007-2014 | |
| 2 | Roland Penwarden | 1.071 | 2030-2036 | |
| 3 | Stan Joyce# | 1.051 | 2028-2039 | |
| 4 | Shuji Kawamoto | 1.046 | 2021-2037 | |
| 5 | Raúl Cabrera | 1.043 | 2020-2027 | |
| 6 | Hubert Lee | 1.042 | 2016-2024 | |
| 6 | Hubert Higgins | 1.042 | 2027-2033 | |
| 8 | Stephen Inman# | 1.039 | 2033-2039 | |
| 9 | Yeong-hun Kim | 1.036 | 2021-2033 | |
| 10 | Lorenzo Ortíz# | 1.034 | 2029-2033 | |
| 10 | Bob Pinksen | 1.034 | 2022-2038 | |
| 12 | Juan León | 1.031 | 2025-2035 | |
| 13 | Alfonso Mercado | 1.024 | 2017-2026 | |
| 14 | Robert Reed | 1.022 | 2010-2014 | |
| 14 | Santiago Ayala | 1.022 | 2021-2034 | |
| 16 | David Morrison | 1.020 | 2016-2027 | |
| 17 | Gerardo García | 1.018 | 2016-2023 | |
| 18 | Gary Davis# | 1.016 | 2029-2036 | |
| 19 | Jason Crabtree | 1.012 | 2014-2023 | |
| 20 | Javier Muñóz | 1.010 | 2009-2016 | |
| 21 | Carlos Silva# | 1.006 | 2034-2036 | |
| 22 | John Gosselin | 1.005 | 2029-2037 | |
| 22 | Ikemoto Nakamura | 1.005 | 2015-2019 | |
| 22 | Lee Middleton | 1.005 | 2009-2020 | |
| 25 | Bernardo Alvarado# | 1.000 | 2026-2040 | |
| 25 | Konosuke Yamamoto | 1.000 | 2027-2038 | |
| 25 | Milo Slaughter | 1.000 | 2031-2037 | |
| 28 | José Martínes | 0.999 | 2026-2037 | |
| 29 | Charlie Liston# | 0.996 | 2027-2040 | |
| 30 | Jesús Villarreal | 0.988 | 2018-2021 | |
| 31 | Ching Lim | 0.987 | 2012-2017 | |
| 32 | Theodore Bryant | 0.979 | 2026-2035 | |
| 33 | Bob Dunn | 0.968 | 2013-2033 | |
| 34 | Takane Chikafuji | 0.948 | 2020-2035 | |
| 35 | Lewis McKinney | 0.925 | 2020-2023 |
