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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Frank Thomas# | .412 | 1990-1994 | |
| 2 | John Olerud# | .379 | 1989-1994 | |
| 3 | Mike Hargrove | .378 | 1976-1988 | |
| 4 | Keith Hernandez | .364 | 1976-1993 | |
| 4 | Will Clark# | .364 | 1986-1994 | |
| 4 | Mark McGwire# | .364 | 1986-1994 | |
| 7 | Mark Grace# | .363 | 1988-1994 | |
| 8 | Rod Carew | .360 | 1976-1981 | |
| 9 | John Kruk# | .359 | 1986-1994 | |
| 9 | Jeff Bagwell# | .359 | 1991-1994 | |
| 11 | John Mayberry | .357 | 1976-1986 | |
| 12 | Danny Tartabull# | .353 | 1984-1994 | |
| 12 | Hiromitsu Ochiai# | .353 | 1982-1994 | |
| 14 | Alvin Davis# | .352 | 1984-1994 | |
| 15 | Ken Phelps | .347 | 1980-1989 | |
| 16 | Fred McGriff# | .345 | 1986-1994 | |
| 17 | Rafael Palmeiro# | .340 | 1986-1994 | |
| 18 | Bob Watson | .339 | 1976-1986 | |
| 18 | Don Mattingly# | .339 | 1982-1994 | |
| 20 | Eddie Murray | .338 | 1977-1992 | |
| 21 | Howard Johnson# | .337 | 1982-1994 | |
| 22 | Mike Ivie | .335 | 1976-1990 | |
| 23 | Gary Matthews | .334 | 1976-1992 | |
| 24 | Jason Thompson | .333 | 1977-1986 | |
| 25 | Kent Hrbek# | .331 | 1981-1994 | |
| 26 | Glenn Davis# | .329 | 1984-1994 | |
| 27 | Mike Young | .327 | 1982-1992 | |
| 28 | Ivan Calderon# | .325 | 1984-1994 | |
| 29 | Willie Aikens | .324 | 1977-1989 | |
| 30 | Wally Joyner | .322 | 1986-1992 | |
| 31 | Bob Horner | .321 | 1978-1993 | |
| 32 | Hal Morris# | .320 | 1989-1994 | |
| 33 | Steve Sax | .319 | 1981-1992 | |
| 34 | Pete O'Brien | .318 | 1982-1992 | |
| 35 | Willie Upshaw | .315 | 1979-1990 | |
| 36 | Craig Shipley# | .314 | 1986-1994 | |
| 36 | Cecil Cooper | .314 | 1976-1992 | |
| 36 | Greg Brock | .314 | 1982-1990 | |
| 39 | George Scott | .313 | 1976-1981 | |
| 40 | Terry Francona# | .311 | 1981-1994 | |
| 41 | Joe Charboneau | .309 | 1980-1991 | |
| 41 | Mike Marshall# | .309 | 1981-1994 | |
| 43 | Steve Garvey | .308 | 1976-1989 | |
| 44 | Larry Sheets# | .304 | 1984-1994 | |
| 45 | Cecil Fielder# | .302 | 1985-1993 | |
| 46 | Kevin McReynolds# | .301 | 1983-1994 | |
| 47 | Chris Chambliss | .300 | 1976-1986 | |
| 48 | Andres Galarraga# | .296 | 1986-1994 | |
| 49 | Kevin Reimer# | .291 | 1989-1994 | |
| 50 | Dave Kingman | .283 | 1976-1987 |
