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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | EFF | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Rand McNally | 1.056 | 2030-2034 | |
| 2 | Hanskarl Hümmel# | 1.003 | 2054-2060 | |
| 3 | Sherman Kline | 0.992 | 2042-2049 | |
| 4 | George McLean | 0.982 | 2048-2053 | |
| 5 | Jesús Guillén | 0.921 | 2036-2045 |
