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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Ketel Marte# | .3950 | 1988-2001 | |
| 2 | Delino DeShields# | .3838 | 1991-2001 | |
| 3 | Barry Larkin# | .3725 | 1988-2001 | |
| 4 | Lonny Frey# | .3723 | 1996-2001 | |
| 5 | Tony Phillips* | .3706 | 1980-1992 | |
| 6 | Marcus Giles# | .3635 | 1987-2001 | |
| 7 | Steve Sax | .3618 | 1985-1996 | |
| 8 | Billy Werber# | .3580 | 1989-2001 | |
| 9 | Luis Urias# | .3551 | 1995-2001 | |
| 10 | Jimmy Stewart | .3544 | 1982-1996 | |
| 11 | Tony Piet | .3511 | 1983-1995 | |
| 12 | Esteban German | .3427 | 1980-1991 | |
| 13 | Johnny Pesky | .3425 | 1982-1997 | |
| 14 | Delwyn Young | .3416 | 1980-1990 | |
| 15 | Kurt Abbott | .3369 | 1980-1989 | |
| 16 | Manny Trillo# | .3362 | 1994-2001 | |
| 17 | Geronimo Pena | .3341 | 1985-2001 | |
| 18 | Carlos Febles | .3329 | 1980-1989 | |
| 19 | Jack Brohamer | .3272 | 1984-1994 | |
| 20 | Jim Gantner# | .3268 | 1987-2001 | |
| 21 | Stu Martin# | .3200 | 1995-2001 | |
| 22 | Ian Kinsler | .3150 | 1980-1992 | |
| 23 | Ben Zobrist | .3125 | 1984-1998 | |
| 24 | Robinson Cano | .3120 | 1980-1995 | |
| 25 | Joey Wendle | .3115 | 1990-1999 | |
| 26 | Josh Barfield | .3091 | 1988-1997 | |
| 27 | Jurickson Profar | .3057 | 1980-1997 | |
| 28 | Mike Edwards | .2977 | 1983-1993 | |
| 29 | Bill Mazeroski# | .2765 | 1986-2000 | |
| 30 | Alex Gonzalez | .2632 | 1986-1998 |
