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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Gary Sheffield# | .360 | 1988-1998 | |
| 2 | Alex Rodriguez# | .358 | 1994-1998 | |
| 3 | Barry Larkin# | .349 | 1986-1998 | |
| 4 | Ozzie Smith | .344 | 1978-1992 | |
| 5 | Alan Trammell* | .337 | 1977-1994 | |
| 6 | Ron Cey | .330 | 1976-1985 | |
| 7 | Tony Fernandez# | .324 | 1983-1998 | |
| 7 | Vance Law | .324 | 1980-1988 | |
| 9 | Cal Ripken Jr.# | .320 | 1981-1998 | |
| 9 | Spike Owen# | .320 | 1984-1996 | |
| 11 | Roy Smalley | .317 | 1976-1992 | |
| 11 | Dickie Thon | .317 | 1979-1997 | |
| 13 | Scott Fletcher# | .311 | 1981-1998 | |
| 14 | Jay Bell# | .310 | 1986-1998 | |
| 15 | Omar Vizquel# | .309 | 1989-1998 | |
| 16 | Jose Oquendo# | .307 | 1984-1998 | |
| 17 | Bill Almon | .301 | 1976-1989 | |
| 18 | Robin Yount | .299 | 1976-1994 | |
| 19 | Harry Chappas | .298 | 1979-1993 | |
| 20 | Terry Pendleton# | .296 | 1985-1997 | |
| 21 | Manuel Lee# | .292 | 1985-1998 | |
| 22 | Mike Bordick# | .291 | 1990-1998 | |
| 23 | Jose Vizcaino# | .288 | 1989-1998 | |
| 24 | Dave Concepcion | .284 | 1976-1985 | |
| 25 | Bill Russell | .282 | 1976-1985 | |
| 26 | Gary Disarcina# | .281 | 1989-1997 | |
| 27 | Jose Hernandez# | .275 | 1991-1998 | |
| 28 | Roger Metzger | .264 | 1976-1988 | |
| 29 | Alvaro Espinoza# | .257 | 1984-1997 |
