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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Postseason Leaderboard |
|---|---|---|---|---|
| 1 | Kelly Johnson | .5172 | 2007-2017 | |
| 2 | Gus Mills# | .5000 | 2021-2027 | |
| 3 | Chris Reid# | .4927 | 2014-2031 | |
| 4 | Dale Harvey | .4884 | 2013-2023 | |
| 5 | Juan Flores# | .4878 | 2027-2031 | |
| 6 | Todd Helton* | .4783 | 1997-2010 | |
| 7 | Omar Infante | .4744 | 2002-2016 | |
| 8 | Cristián Cuevas | .4730 | 2012-2016 | |
| 9 | Adrián Pevez# | .4699 | 2027-2031 | |
| 10 | Art Looper | .4583 | 2018-2030 | |
| 11 | Rafael Furcal | .4571 | 2000-2009 | |
| 12 | Roberto Kelly* | .4514 | 1987-2005 | |
| 13 | Eric Patterson# | .4478 | 2024-2030 | |
| 14 | Jim Edmonds* | .4454 | 1993-2008 | |
| 15 | Ryan Thompson | .4444 | 1993-2004 | |
| 16 | Keith White | .4433 | 2018-2027 | |
| 17 | Júlio López | .4418 | 2004-2013 | |
| 18 | Jason Giambi | .4416 | 1995-2008 | |
| 19 | Edmund Mueller | .4415 | 2013-2028 | |
| 20 | Dave Hansen | .4394 | 1990-2001 | |
| 21 | Matt Lawton | .4390 | 1995-2002 | |
| 22 | Kwang-sub Yi# | .4366 | 2028-2031 | |
| 23 | Dani Martínez | .4364 | 2007-2014 | |
| 24 | Brendan Lumby# | .4362 | 2026-2031 | |
| 25 | Bill Hawkins# | .4351 | 2027-2031 | |
| 26 | Mike Clark | .4340 | 2016-2021 | |
| 27 | George Glover | .4326 | 2016-2026 | |
| 28 | Kevin Barker | .4304 | 1999-2008 | |
| 29 | David Ortiz | .4300 | 1997-2006 | |
| 30 | Albert Pujols* | .4296 | 2001-2020 | |
| 31 | Jorge Contreras# | .4255 | 2026-2031 | |
| 31 | Bobby Higginson | .4255 | 1995-2004 | |
| 33 | Carl Everett | .4211 | 1993-2003 | |
| 33 | Kevin Perkins | .4211 | 2019-2023 | |
| 33 | Tom Perkins | .4211 | 2006-2023 | |
| 36 | David Eckstein | .4203 | 2001-2010 | |
| 37 | Joe Farley | .4202 | 2013-2025 | |
| 38 | Jeremy Giambi | .4200 | 1998-2006 | |
| 38 | Mark Loretta | .4200 | 1995-2006 | |
| 40 | Ray Baker | .4167 | 2010-2021 | |
| 40 | Sean Casey | .4167 | 1997-2006 | |
| 40 | Steve Hutchins | .4167 | 2017-2025 | |
| 40 | Milo Slaughter# | .4167 | 2020-2027 | |
| 44 | Devin Brown | .4153 | 2015-2022 | |
| 45 | Justin Leone | .4151 | 2005-2017 | |
| 46 | Jose Offerman | .4146 | 1990-2002 | |
| 47 | Rusty Greer | .4131 | 1994-2005 | |
| 48 | Júlio Sánchez | .4126 | 2007-2015 | |
| 49 | Ryan Church | .4118 | 2005-2010 | |
| 49 | Pedro Álvarez | .4118 | 2010-2023 | |
| 51 | Erubiel Durazo | .4110 | 1999-2011 | |
| 51 | John White | .4110 | 2024-2028 | |
| 53 | Darin Erstad | .4107 | 1996-2003 | |
| 54 | Hoyt Adams | .4099 | 2014-2027 | |
| 55 | Eric Anthony* | .4097 | 1989-2004 | |
| 56 | Masafumi Ishida# | .4091 | 2029-2031 | |
| 57 | Christopher Hall# | .4082 | 2024-2030 | |
| 58 | Jake Christensen# | .4078 | 2021-2031 | |
| 59 | Robert Fick* | .4069 | 1998-2007 | |
| 59 | Edward Hinchy# | .4069 | 2025-2031 | |
| 61 | Peter Bergeron | .4068 | 2000-2003 | |
| 61 | Larry Walker* | .4068 | 1989-2005 | |
| 63 | Darrell Sherman | .4065 | 1993-2002 | |
| 64 | Jason Ellis | .4057 | 2013-2019 | |
| 64 | Stephen Vaughn | .4057 | 2012-2021 | |
| 66 | António Grillo# | .4054 | 2024-2031 | |
| 67 | Jon Coleman | .4046 | 2016-2026 | |
| 68 | Dan Harte | .4043 | 2004-2013 | |
| 69 | Tom Godwin | .4040 | 2012-2027 | |
| 70 | John Olerud* | .4035 | 1989-2002 | |
| 71 | Joam Penaguio# | .4023 | 2021-2027 | |
| 72 | Freddie Anderson* | .4007 | 2008-2021 | |
| 73 | Daniel Hanson | .4000 | 2019-2024 | |
| 73 | Dean Palmer | .4000 | 1991-2000 | |
| 73 | Anthony Williamson | .4000 | 1999-2004 | |
| 73 | José Álvarez# | .4000 | 2023-2031 | |
| 77 | Mark Moore | .3981 | 2012-2026 | |
| 78 | Ken Nelson | .3980 | 2006-2014 | |
| 79 | Ramiro Gonzáles | .3978 | 1989-2003 | |
| 80 | Pat McJannett | .3967 | 2011-2019 | |
| 81 | Parker Woods* | .3960 | 2007-2020 | |
| 82 | Bo Hart | .3958 | 2004-2007 | |
| 82 | Steve Roberts# | .3958 | 2020-2031 | |
| 84 | Bob Key | .3953 | 2015-2022 | |
| 85 | Ichiro Suzuki | .3939 | 2001-2009 | |
| 86 | Esteban Navarro | .3934 | 2009-2022 | |
| 87 | Steve Bailey# | .3931 | 2018-2031 | |
| 88 | Jerry Cates | .3929 | 2017-2027 | |
| 89 | Manuel Bolt# | .3924 | 2026-2031 | |
| 90 | Matt Wieters | .3914 | 2012-2026 | |
| 91 | Albert Belle | .3913 | 1989-2002 | |
| 91 | Ed Sprague Jr* | .3913 | 1991-2007 | |
| 93 | Júlio Cuervo# | .3907 | 2021-2028 | |
| 94 | Johnathan Gibbs | .3903 | 2016-2022 | |
| 95 | Todd Walker* | .3896 | 1996-2013 | |
| 96 | Mario Márquez# | .3889 | 2026-2031 | |
| 96 | Stephen Smith | .3889 | 2014-2025 | |
| 98 | Warren Jordan# | .3885 | 2022-2031 | |
| 99 | Scotty Wilson | .3883 | 2018-2028 | |
| 100 | Mookie Betts# | .3880 | 2024-2031 |
