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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | SLG | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Frank Thomas# | .571 | 1990-1998 | |
| 2 | Howard Johnson# | .550 | 1982-1998 | |
| 3 | Mark McGwire# | .529 | 1986-1998 | |
| 4 | Carlos Delgado# | .523 | 1993-1998 | |
| 5 | Bob Horner* | .510 | 1978-1993 | |
| 6 | Hiromitsu Ochiai | .508 | 1982-1994 | |
| 7 | Will Clark# | .503 | 1986-1998 | |
| 8 | Edgar Martinez# | .502 | 1987-1998 | |
| 9 | Don Mattingly# | .497 | 1982-1998 | |
| 10 | Rafael Palmeiro# | .495 | 1986-1998 | |
| 11 | Jeff Bagwell# | .494 | 1991-1998 | |
| 12 | Glenn Davis# | .491 | 1984-1998 | |
| 13 | Cecil Fielder# | .478 | 1985-1997 | |
| 14 | Ken Phelps | .475 | 1980-1989 | |
| 15 | Larry Sheets | .467 | 1984-1994 | |
| 16 | John Olerud# | .466 | 1989-1998 | |
| 17 | Ivan Calderon# | .465 | 1984-1998 | |
| 18 | Danny Tartabull# | .464 | 1984-1998 | |
| 19 | Fred McGriff# | .463 | 1986-1998 | |
| 20 | Andres Galarraga# | .459 | 1986-1997 | |
| 20 | John Mayberry | .459 | 1976-1986 | |
| 22 | Eddie Murray | .458 | 1977-1992 | |
| 23 | Cecil Cooper | .457 | 1976-1992 | |
| 24 | Dave Kingman | .454 | 1976-1987 | |
| 24 | Kent Hrbek# | .454 | 1981-1997 | |
| 26 | Bob Watson | .446 | 1976-1986 | |
| 27 | Hal Morris# | .444 | 1989-1998 | |
| 28 | Alvin Davis | .443 | 1984-1995 | |
| 29 | Mike Marshall | .440 | 1981-1994 | |
| 30 | Kevin McReynolds | .437 | 1983-1996 | |
| 31 | Tino Martinez# | .436 | 1991-1997 | |
| 31 | Mike Young | .436 | 1982-1992 | |
| 33 | Wally Joyner | .435 | 1986-1992 | |
| 34 | Willie Upshaw | .428 | 1979-1990 | |
| 35 | Lee Stevens# | .426 | 1991-1997 | |
| 36 | Craig Shipley# | .420 | 1986-1998 | |
| 37 | Willie Aikens | .418 | 1977-1989 | |
| 38 | Mark Grace# | .417 | 1988-1998 | |
| 39 | Mike Ivie | .416 | 1976-1990 | |
| 40 | Jason Thompson | .415 | 1977-1986 | |
| 41 | Joe Charboneau | .414 | 1980-1991 | |
| 42 | Gary Matthews | .409 | 1976-1992 | |
| 43 | Keith Hernandez | .408 | 1976-1993 | |
| 44 | Chris Chambliss | .405 | 1976-1986 | |
| 45 | Kevin Reimer | .404 | 1989-1996 | |
| 46 | Pete O'Brien | .403 | 1982-1992 | |
| 47 | John Kruk# | .401 | 1986-1997 | |
| 48 | Steve Garvey | .396 | 1976-1989 | |
| 49 | Steve Sax | .371 | 1981-1992 | |
| 50 | Mike Hargrove | .368 | 1976-1988 | |
| 51 | Terry Francona | .363 | 1981-1996 |
