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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OPS | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | George Mayer | .9356 | 1955-1962 | |
| 2 | Dermott Barden | .9219 | 1958-1969 | |
| 3 | Adham Da'ud | .8961 | 1968-1980 | |
| 4 | Rossano Andretta | .8843 | 1958-1968 | |
| 5 | Francisco Reyes | .8799 | 1960-1969 | |
| 6 | George Trask# | .8718 | 1981-1990 | |
| 7 | Jeff Rigden | .8566 | 1933-1944 | |
| 8 | Raphaël Roman | .8556 | 1960-1970 | |
| 9 | Stanley Howell# | .8397 | 1985-1990 | |
| 10 | Conchúr Labourer | .8368 | 1964-1977 | |
| 11 | Chris Makeever | .8346 | 1939-1949 | |
| 12 | Andreas Zettel | .7664 | 1933-1946 | |
| 13 | Ray Arden | .7430 | 1945-1950 | |
| 14 | Scott Corson | .7324 | 1939-1949 | |
| 15 | Lee Burrough | .7048 | 1913-1922 |
