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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Barry Larkin# | .352 | 1986-1994 | |
| 1 | Gary Sheffield# | .352 | 1988-1994 | |
| 3 | Ozzie Smith | .344 | 1978-1992 | |
| 4 | George Brett | .343 | 1976-1992 | |
| 5 | Alan Trammell# | .337 | 1977-1994 | |
| 6 | Ron Cey | .330 | 1976-1985 | |
| 7 | Tony Fernandez# | .328 | 1983-1994 | |
| 8 | Jorge Orta | .327 | 1976-1987 | |
| 9 | Cal Ripken Jr.# | .326 | 1981-1994 | |
| 10 | Vance Law | .324 | 1980-1988 | |
| 11 | Mark Belanger | .322 | 1976-1981 | |
| 12 | Spike Owen# | .320 | 1984-1994 | |
| 13 | Roy Smalley | .317 | 1976-1992 | |
| 13 | Dickie Thon# | .317 | 1979-1994 | |
| 15 | Jay Bell# | .313 | 1986-1994 | |
| 16 | Scott Fletcher# | .311 | 1981-1994 | |
| 17 | Bump Wills | .310 | 1977-1989 | |
| 18 | Jose Oquendo# | .304 | 1984-1994 | |
| 19 | Bill Almon | .301 | 1976-1989 | |
| 19 | Mike Gallego# | .301 | 1985-1994 | |
| 21 | Robin Yount# | .299 | 1976-1994 | |
| 21 | Omar Vizquel# | .299 | 1989-1994 | |
| 23 | Harry Chappas | .298 | 1979-1993 | |
| 23 | Manuel Lee# | .298 | 1985-1994 | |
| 25 | Terry Pendleton# | .295 | 1985-1994 | |
| 26 | Gary Disarcina# | .294 | 1989-1994 | |
| 26 | Jose Vizcaino# | .294 | 1989-1994 | |
| 28 | Dave Concepcion | .284 | 1976-1985 | |
| 29 | Bill Russell | .282 | 1976-1985 | |
| 30 | Rafael Santana | .268 | 1983-1990 | |
| 31 | Roger Metzger | .264 | 1976-1988 | |
| 32 | Alvaro Espinoza# | .259 | 1984-1994 |
