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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | EFF | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Wilson Tierney | 1.172 | 2053-2060 | |
| 2 | Trevor Cox | 1.116 | 2048-2060 | |
| 3 | Carl Bayerlein | 1.113 | 2051-2058 | |
| 4 | Jakob Helveg | 1.057 | 2050-2059 | |
| 5 | Manuel Espionza | 1.056 | 2058-2065 | |
| 6 | Kevin Bryant | 1.048 | 2045-2055 | |
| 7 | Myles Tite | 1.043 | 2052-2057 | |
| 7 | Jiovanni Mier | 1.043 | 2014-2019 | |
| 9 | Bill Narborough | 1.042 | 2057-2062 | |
| 10 | Suk-joo Park | 1.041 | 2045-2051 | |
| 11 | Sixto Romano | 1.038 | 2056-2066 | |
| 12 | Mario Baier | 1.023 | 2039-2043 | |
| 13 | Ivan De Jesus Jr. | 1.022 | 2006-2023 | |
| 14 | Leo Lee | 1.021 | 2055-2061 | |
| 15 | Müþfik Orhan | 1.011 | 2047-2050 | |
| 16 | Vernon Harris | 0.983 | 2057-2071 | |
| 17 | Sergio Martínez | 0.980 | 2020-2025 | |
| 18 | Ken Ladner | 0.970 | 2030-2038 | |
| 19 | Ron Grindal | 0.932 | 2048-2054 |
