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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Stanley Howell# | .4140 | 1985-1990 | |
| 2 | Dermott Barden | .4136 | 1958-1969 | |
| 3 | George Mayer | .3980 | 1955-1962 | |
| 4 | George Trask# | .3967 | 1981-1990 | |
| 5 | Ray Arden | .3954 | 1945-1950 | |
| 6 | Adham Da'ud | .3926 | 1968-1980 | |
| 7 | Rossano Andretta | .3908 | 1958-1968 | |
| 8 | Scott Corson | .3887 | 1939-1949 | |
| 9 | Jeff Rigden | .3777 | 1933-1944 | |
| 10 | Francisco Reyes | .3762 | 1960-1969 | |
| 11 | Raphaël Roman | .3724 | 1960-1970 | |
| 12 | Chris Makeever | .3661 | 1939-1949 | |
| 13 | Conchúr Labourer | .3565 | 1964-1977 | |
| 14 | Lee Burrough | .3468 | 1913-1922 | |
| 15 | Andreas Zettel | .3412 | 1933-1946 |
