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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Pat Howard# | .4440 | 1987 | |
| 2 | Pat Howard# | .4297 | 1984 | |
| 3 | Pat Howard# | .4235 | 1985 | |
| 4 | Pat Howard# | .4213 | 1986 | |
| 5 | Harry Cooper# | .4102 | 1982 | |
| 6 | Jon Carlson# | .3981 | 1987 | |
| 7 | Harry Cooper# | .3943 | 1983 | |
| 8 | José Espinoza# | .3938 | 1988 | |
| 9 | Eric Holmes# | .3876 | 1982 | |
| 10 | Eddie Terry# | .3863 | 1988 | |
| 11 | Eric Holmes# | .3846 | 1983 | |
| 12 | Jon Carlson# | .3787 | 1988 | |
| 13 | Pat Howard# | .3664 | 1983 | |
| 14 | Eric Holmes# | .3614 | 1986 | |
| 15 | John Hill# | .3587 | 1991 | |
| 16 | Jon Carlson# | .3586 | 1991 | |
| 17 | Jon Carlson# | .3497 | 1990 | |
| 18 | Jon Carlson# | .3481 | 1985 | |
| 19 | Javier Guzmán# | .3440 | 1991 | |
| 20 | Eddie Terry# | .3391 | 1986 | |
| 21 | Reid Lee# | .3384 | 1981 | |
| 22 | José Espinoza# | .3376 | 1989 | |
| 23 | Gunnar Dorsey# | .3362 | 1989 | |
| 24 | Eddie Terry# | .3347 | 1984 | |
| 25 | José Díaz# | .3339 | 1991 | |
| 26 | Eric Holmes# | .3242 | 1985 | |
| 27 | Danny Wilson# | .3235 | 1983 | |
| 28 | Luke Fields# | .3223 | 1987 | |
| 29 | Allan Wagner# | .3158 | 1991 | |
| 30 | José Díaz# | .3131 | 1990 | |
| 31 | Eric Holmes# | .3028 | 1984 | |
| 32 | Bob Ward# | .2706 | 1990 | |
| 33 | Desi Stone# | .2519 | 1991 |
