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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Barney McCosky# | .3977 | 1995-2001 | |
| 2 | George Thomas | .3794 | 1980-1999 | |
| 3 | Joe Orsulak# | .3647 | 1996-2001 | |
| 4 | Jon Jay# | .3570 | 1992-2001 | |
| 5 | Darren Lewis# | .3556 | 1996-2001 | |
| 6 | Cecil Espy | .3555 | 1980-1996 | |
| 7 | Bake McBride | .3549 | 1981-1995 | |
| 8 | Sixto Lezcano# | .3524 | 1990-2001 | |
| 9 | Chuck Diering | .3495 | 1980-1991 | |
| 10 | Alejandro de Aza | .3431 | 1983-1996 | |
| 11 | Curtis Goodwin# | .3378 | 1989-2000 | |
| 12 | Jason McDonald | .3333 | 1980-1991 | |
| 13 | Roberto Clemente | .3303 | 1980-1994 | |
| 14 | Don Young# | .3274 | 1982-2001 | |
| 15 | Carl Furillo | .3261 | 1986-2000 | |
| 16 | Denard Span | .3255 | 1980-1991 | |
| 17 | Willie Wilson# | .3250 | 1985-1999 | |
| 18 | Rick Manning | .3245 | 1984-1999 | |
| 19 | Ruben Rivera | .3206 | 1982-1997 | |
| 20 | Dave Martinez | .3199 | 1985-1998 | |
| 21 | Jim Lyttle | .3181 | 1980-1985 | |
| 22 | Mike Cameron | .3150 | 1980-1991 | |
| 23 | Jacoby Ellsbury | .3139 | 1982-1996 | |
| 24 | Willie Davis | .3137 | 1980-1996 | |
| 25 | Wayne Comer# | .3130 | 1996-2001 | |
| 26 | Brett Gardner# | .3101 | 1992-2001 | |
| 27 | Rajai Davis | .3087 | 1987-1997 | |
| 28 | Larry Herndon | .3028 | 1987-1996 | |
| 29 | Thurman Tucker | .3008 | 1986-1999 | |
| 30 | Bob Dernier# | .2932 | 1995-2001 | |
| 31 | Adam Jones# | .2925 | 1990-2001 | |
| 32 | Dave Collins | .2912 | 1987-1999 | |
| 33 | Bob Kennedy | .2901 | 1980-1995 | |
| 34 | Matt Diaz | .2855 | 1980-1989 | |
| 35 | Kiddo Davis | .2839 | 1987-1999 | |
| 36 | Ken Williams | .2781 | 1980-1991 |
