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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Edmund Mueller | .4386 | 2013-2028 | |
| 2 | Chris Reid# | .4382 | 2014-2031 | |
| 3 | Gregorio Gómez | .4279 | 2009-2023 | |
| 4 | Jared Tucker | .4174 | 2012-2027 | |
| 5 | Freddie Anderson* | .4168 | 2008-2021 | |
| 6 | José Osón | .4167 | 2016-2026 | |
| 7 | Ray Baker | .4148 | 2010-2021 | |
| 8 | Todd Helton* | .4146 | 1997-2010 | |
| 9 | Stephen North | .4134 | 2012-2022 | |
| 9 | Júlio López | .4134 | 2004-2013 | |
| 11 | Christopher Taylor | .4119 | 2006-2012 | |
| 12 | Prakoso Prawiranega* | .4099 | 2007-2024 | |
| 13 | Jorge Ruíz | .4085 | 2004-2018 | |
| 14 | Luis Arraez# | .4081 | 2026-2031 | |
| 15 | John Olerud* | .4050 | 1989-2002 | |
| 16 | Pepe Mendoza* | .4048 | 2007-2022 | |
| 17 | Santiago Prado# | .4038 | 2019-2031 | |
| 18 | Langgeng Pane | .4032 | 2010-2023 | |
| 18 | Rod Neely | .4032 | 2012-2019 | |
| 20 | James Wilkins# | .4010 | 2021-2031 | |
| 21 | Kal Daniels* | .4004 | 1986-2003 | |
| 22 | Akio Hayagawa# | .4002 | 2026-2031 | |
| 23 | Donovan Brown# | .4001 | 2014-2030 | |
| 24 | Quilvio Veras | .3993 | 1995-2006 | |
| 25 | Raleigh Dupree | .3989 | 2016-2027 | |
| 26 | Eric Anthony* | .3987 | 1989-2004 | |
| 27 | Ramiro Gonzáles | .3984 | 1989-2003 | |
| 28 | Orlando Merced | .3982 | 1990-2004 | |
| 28 | Jack Cust | .3982 | 2001-2013 | |
| 30 | Chris Latham | .3981 | 1997-2009 | |
| 31 | Rusty Greer | .3976 | 1994-2005 | |
| 32 | Orlando Cabrera# | .3962 | 2023-2031 | |
| 33 | Francisco Castillo# | .3959 | 2024-2031 | |
| 34 | Robert Fick* | .3955 | 1998-2007 | |
| 35 | Bobby Abreu | .3946 | 1996-2010 | |
| 36 | Jon Coleman | .3942 | 2016-2026 | |
| 37 | Guillermo Velasquez | .3939 | 1994-2003 | |
| 37 | Steven Smith | .3939 | 2017-2030 | |
| 39 | Héctor Barilla | .3938 | 2010-2018 | |
| 40 | Jake Christensen# | .3937 | 2021-2031 | |
| 41 | Jason Giambi | .3936 | 1995-2008 | |
| 42 | Albert Pujols* | .3935 | 2001-2020 | |
| 43 | Stephen Smith | .3926 | 2014-2025 | |
| 44 | Johnny Damon* | .3925 | 1995-2008 | |
| 44 | Nate Hopper | .3925 | 2012-2025 | |
| 46 | José García | .3922 | 2012-2023 | |
| 47 | Travis Hafner | .3920 | 2002-2013 | |
| 48 | Jim Edmonds* | .3911 | 1993-2008 | |
| 49 | Jason Heyward | .3904 | 2011-2025 | |
| 50 | Matt Hughes | .3902 | 2009-2021 | |
| 51 | Matt Lawton | .3900 | 1995-2002 | |
| 52 | J T Snow | .3897 | 1992-2004 | |
| 53 | John Smith | .3896 | 2003-2015 | |
| 54 | Kevin Young* | .3892 | 1993-2007 | |
| 55 | Erik Evans | .3889 | 2012-2029 | |
| 56 | Dwaine Gunn | .3884 | 2014-2021 | |
| 57 | Ryan Jackson | .3883 | 2008-2019 | |
| 58 | Edwin Encarnacion | .3882 | 2007-2017 | |
| 59 | Paul Shaw* | .3876 | 2003-2014 | |
| 59 | Corey Koskie* | .3876 | 1998-2012 | |
| 61 | Trot Nixon | .3875 | 1996-2008 | |
| 62 | Steve Bailey# | .3874 | 2018-2031 | |
| 63 | Jason Kendall | .3873 | 1996-2012 | |
| 64 | Jaime Nava# | .3869 | 2021-2031 | |
| 65 | Dave Nelson | .3864 | 2007-2025 | |
| 66 | António García# | .3862 | 2025-2031 | |
| 67 | Troy Morgan | .3854 | 2008-2022 | |
| 68 | David Ortiz | .3852 | 1997-2006 | |
| 69 | Jeff Bagwell* | .3851 | 1991-2006 | |
| 70 | Hideki Matsui | .3850 | 2005-2016 | |
| 71 | John Thompson | .3849 | 2008-2016 | |
| 72 | Victor Martinez* | .3847 | 2002-2016 | |
| 73 | Erubiel Durazo | .3840 | 1999-2011 | |
| 73 | Thom Horton | .3840 | 2015-2028 | |
| 73 | Marc Nelson# | .3840 | 2025-2031 | |
| 76 | Lawrence Conley# | .3832 | 2024-2031 | |
| 77 | Armando Ramírez# | .3830 | 2026-2031 | |
| 78 | Nick Glenn# | .3829 | 2022-2031 | |
| 79 | Todd Walker* | .3826 | 1996-2013 | |
| 80 | Kevin Barker | .3825 | 1999-2008 | |
| 81 | Roberto Kelly* | .3822 | 1987-2005 | |
| 82 | Bob Austin* | .3819 | 2008-2019 | |
| 83 | Craig Lynch | .3817 | 2011-2021 | |
| 84 | Bob Key | .3814 | 2015-2022 | |
| 85 | Ray Beatty | .3812 | 2000-2012 | |
| 86 | Gordon Weaver | .3811 | 2000-2009 | |
| 87 | Paul Konerko* | .3809 | 1997-2014 | |
| 87 | James Sims | .3809 | 2012-2019 | |
| 89 | Michael Barrett* | .3808 | 1998-2013 | |
| 89 | Chris Huggins | .3808 | 2018-2029 | |
| 89 | Mike Lamb | .3808 | 2000-2009 | |
| 92 | Shawn Birmingham | .3806 | 2011-2026 | |
| 93 | Augusto De La Cruz | .3804 | 2007-2019 | |
| 94 | George Glover | .3799 | 2016-2026 | |
| 95 | Eric Green | .3796 | 2008-2017 | |
| 96 | Harlan Lawrence | .3795 | 2019-2028 | |
| 96 | Carlos Hernández# | .3795 | 2022-2029 | |
| 98 | Scott Reynolds# | .3794 | 2022-2028 | |
| 99 | Eduardo Rivera# | .3793 | 2025-2031 | |
| 100 | Mauro Pérez* | .3791 | 2008-2023 |
