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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Joe Morgan | .4346 | 1976 | |
| 2 | Joe Morgan | .4280 | 1977 | |
| 3 | Mike Miley | .4260 | 1981 | |
| 4 | Joe Morgan | .4103 | 1979 | |
| 5 | Mike Miley | .3974 | 1982 | |
| 6 | Wade Boggs# | .3938 | 1991 | |
| 7 | Joe Morgan | .3937 | 1978 | |
| 8 | Wade Boggs# | .3920 | 1988 | |
| 9 | Wade Boggs# | .3918 | 1990 | |
| 10 | Tony Phillips | .3882 | 1988 | |
| 11 | Dan Driessen | .3855 | 1978 | |
| 12 | Craig Biggio# | .3847 | 1990 | |
| 13 | Wade Boggs# | .3846 | 1989 | |
| 14 | Mike Miley | .3827 | 1985 | |
| 15 | Ken Oberkfell | .3819 | 1977 | |
| 16 | Wade Boggs# | .3816 | 1992 | |
| 17 | Lance Blankenship# | .3785 | 1989 | |
| 18 | Tony Phillips | .3782 | 1989 | |
| 19 | Roberto Alomar# | .3764 | 1993 | |
| 20 | Bobby Grich | .3748 | 1980 | |
| 21 | Tom Herr | .3743 | 1986 | |
| 22 | Jody Reed# | .3742 | 1990 | |
| 23 | Mike Cubbage | .3741 | 1978 | |
| 24 | Bobby Grich | .3713 | 1983 | |
| 25 | Mike Cubbage | .3700 | 1979 | |
| 25 | Lance Blankenship# | .3700 | 1991 | |
| 27 | Randy Ready# | .3686 | 1987 | |
| 28 | Tony Phillips | .3684 | 1987 | |
| 29 | Roberto Alomar# | .3681 | 1991 | |
| 30 | Dan Driessen | .3658 | 1979 | |
| 31 | Tom Herr | .3649 | 1982 | |
| 32 | Ron Oester | .3644 | 1979 | |
| 33 | Roberto Alomar# | .3642 | 1988 | |
| 34 | Lou Whitaker# | .3635 | 1981 | |
| 34 | Bobby Grich | .3635 | 1976 | |
| 36 | Roberto Alomar# | .3632 | 1994 | |
| 37 | Craig Biggio# | .3630 | 1989 | |
| 38 | Bobby Grich | .3627 | 1981 | |
| 39 | Tim Flannery | .3625 | 1980 | |
| 40 | Jerry Browne# | .3620 | 1987 | |
| 41 | Johnny Ray# | .3606 | 1987 | |
| 42 | Marty Barrett | .3595 | 1983 | |
| 43 | Tom Herr | .3592 | 1984 | |
| 44 | Tom Herr | .3585 | 1983 | |
| 45 | Jerry Remy | .3578 | 1976 | |
| 46 | Tim Teufel# | .3572 | 1992 | |
| 47 | Willie Randolph | .3568 | 1980 | |
| 48 | Willie Randolph | .3565 | 1981 | |
| 49 | Willie Randolph | .3560 | 1978 | |
| 50 | Lou Whitaker# | .3558 | 1980 | |
| 51 | Robby Thompson# | .3554 | 1990 | |
| 51 | Bobby Grich | .3554 | 1982 | |
| 53 | Tom Herr | .3548 | 1981 | |
| 54 | Jerry Browne# | .3546 | 1991 | |
| 55 | Craig Biggio# | .3545 | 1993 | |
| 55 | Craig Biggio# | .3545 | 1991 | |
| 57 | Dan Driessen | .3544 | 1977 | |
| 58 | Dan Driessen | .3540 | 1981 | |
| 59 | Robby Thompson# | .3538 | 1993 | |
| 60 | Bobby Grich | .3535 | 1985 | |
| 61 | Craig Biggio# | .3533 | 1988 | |
| 62 | Bill Doran# | .3532 | 1985 | |
| 63 | Tom Herr | .3529 | 1987 | |
| 64 | Bobby Grich | .3520 | 1979 | |
| 65 | Chuck Knoblauch# | .3512 | 1994 | |
| 66 | Jeff Frye# | .3508 | 1994 | |
| 67 | Delino DeShields# | .3507 | 1992 | |
| 68 | Willie Randolph | .3494 | 1977 | |
| 69 | Jerry Browne# | .3490 | 1988 | |
| 70 | Wally Backman | .3486 | 1981 | |
| 71 | Randy Ready# | .3481 | 1984 | |
| 72 | Jerry Remy | .3475 | 1983 | |
| 73 | Ron Oester | .3473 | 1981 | |
| 74 | Bill Doran# | .3467 | 1989 | |
| 75 | Bill Doran# | .3464 | 1983 | |
| 76 | Lance Blankenship# | .3460 | 1990 | |
| 77 | Craig Reynolds | .3458 | 1981 | |
| 78 | Randy Ready# | .3456 | 1988 | |
| 79 | Tony Bernazard | .3455 | 1980 | |
| 80 | Paul Molitor# | .3454 | 1985 | |
| 81 | Brent Gates# | .3453 | 1993 | |
| 82 | Doug Rader | .3450 | 1976 | |
| 83 | Geronimo Pena# | .3445 | 1992 | |
| 84 | Bobby Grich | .3443 | 1977 | |
| 84 | Craig Biggio# | .3443 | 1994 | |
| 86 | Lou Whitaker# | .3439 | 1982 | |
| 87 | Mike Cubbage | .3438 | 1976 | |
| 88 | Willie Randolph | .3437 | 1976 | |
| 88 | Johnny Ray# | .3437 | 1984 | |
| 90 | Craig Biggio# | .3435 | 1992 | |
| 90 | Jerry Remy | .3435 | 1979 | |
| 92 | Tom Herr | .3428 | 1980 | |
| 93 | Tim Teufel# | .3427 | 1987 | |
| 94 | Mickey Morandini# | .3416 | 1991 | |
| 94 | Lou Whitaker# | .3416 | 1979 | |
| 96 | Derrel Thomas | .3413 | 1976 | |
| 97 | Onix Concepcion# | .3407 | 1989 | |
| 98 | Paul Molitor# | .3402 | 1986 | |
| 98 | Randy Ready# | .3402 | 1986 | |
| 100 | Tim Teufel# | .3398 | 1986 |
