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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Victor Martinez* | .4452 | 2004 | |
| 2 | Júlio López | .4403 | 2006 | |
| 3 | Júlio López | .4326 | 2010 | |
| 3 | Júlio López | .4326 | 2008 | |
| 5 | Victor Martinez* | .4306 | 2005 | |
| 6 | Jason Kendall | .4294 | 2003 | |
| 7 | Robert Fick* | .4247 | 1998 | |
| 8 | Jason Kendall | .4245 | 2008 | |
| 9 | Bret Gordon | .4238 | 2014 | |
| 10 | Michael Barrett* | .4237 | 2006 | |
| 11 | James Sims | .4234 | 2014 | |
| 12 | Robert Fick* | .4217 | 2004 | |
| 13 | Jason Kendall | .4206 | 2005 | |
| 14 | Nick Taylor | .4183 | 2016 | |
| 15 | Michael Barrett* | .4179 | 2009 | |
| 16 | Dave Anthony | .4155 | 2015 | |
| 17 | Nick Taylor | .4151 | 2019 | |
| 18 | Ryan Doumit | .4140 | 2019 | |
| 19 | Jason Kendall | .4132 | 2004 | |
| 20 | Michael Foster# | .4125 | 2027 | |
| 21 | Júlio López | .4120 | 2009 | |
| 22 | Robert Fick* | .4115 | 2006 | |
| 22 | Júlio López | .4115 | 2007 | |
| 24 | Jason Kendall | .4098 | 2010 | |
| 25 | Jake Barkett | .4092 | 2019 | |
| 26 | Dave Nilsson | .4090 | 1994 | |
| 26 | Ryan Doumit | .4090 | 2017 | |
| 28 | Nick Taylor | .4086 | 2018 | |
| 29 | Jason Finch | .4084 | 2019 | |
| 30 | Michael Barrett* | .4083 | 2007 | |
| 31 | Robert Fick* | .4052 | 2001 | |
| 32 | Victor Martinez* | .4030 | 2006 | |
| 33 | Jake Barkett | .4019 | 2017 | |
| 33 | Robert Fick* | .4019 | 2000 | |
| 33 | Gregg Zaun | .4019 | 1996 | |
| 36 | Ray Craig# | .4014 | 2025 | |
| 37 | Buster Posey | .4011 | 2018 | |
| 38 | Matt Wieters | .4010 | 2014 | |
| 39 | Dave Anthony | .4004 | 2016 | |
| 39 | Victor Martinez* | .4004 | 2010 | |
| 41 | Ed Sprague Jr* | .4000 | 1995 | |
| 42 | Jason Kendall | .3981 | 2002 | |
| 43 | Ray Craig# | .3978 | 2026 | |
| 44 | Gregg Zaun | .3974 | 1995 | |
| 44 | Matt Wieters | .3974 | 2015 | |
| 44 | Ray Craig# | .3974 | 2027 | |
| 47 | Júlio López | .3971 | 2005 | |
| 48 | Joe Mauer* | .3970 | 2007 | |
| 49 | Mike Piazza* | .3969 | 1996 | |
| 50 | Michael Barrett* | .3966 | 2005 | |
| 51 | Mike Piazza* | .3955 | 1995 | |
| 52 | Buster Posey | .3954 | 2016 | |
| 52 | Jake Barkett | .3954 | 2016 | |
| 54 | Robert Fick* | .3947 | 2003 | |
| 55 | James Sims | .3933 | 2015 | |
| 56 | Brody Bailey | .3915 | 2010 | |
| 57 | Ray Craig# | .3911 | 2022 | |
| 58 | Jason Finch | .3907 | 2018 | |
| 59 | Victor Martinez* | .3906 | 2008 | |
| 60 | Jeremy Thomas | .3904 | 2023 | |
| 61 | Michael Barrett* | .3903 | 2003 | |
| 62 | Dave Anthony | .3901 | 2017 | |
| 63 | James Sims | .3894 | 2017 | |
| 64 | Ed Sprague Jr* | .3893 | 2004 | |
| 65 | Paul Griggs | .3889 | 2015 | |
| 65 | Robert Fick* | .3889 | 1999 | |
| 67 | Joe Mauer* | .3876 | 2011 | |
| 68 | Joe Mauer* | .3855 | 2006 | |
| 69 | Joe Mauer* | .3840 | 2013 | |
| 70 | James Sims | .3839 | 2016 | |
| 70 | Gregg Zaun | .3839 | 2001 | |
| 72 | Jason Kendall | .3838 | 2001 | |
| 73 | Dave Tate | .3831 | 2015 | |
| 74 | Jorge Posada | .3826 | 1999 | |
| 75 | Dave Tate | .3825 | 2019 | |
| 76 | Gabriel Hodge | .3822 | 2014 | |
| 77 | Robert Fick* | .3820 | 2002 | |
| 78 | Michael Barrett* | .3810 | 2000 | |
| 79 | Ed Sprague Jr* | .3808 | 1993 | |
| 80 | Buster Posey | .3807 | 2019 | |
| 81 | Paul Griggs | .3806 | 2011 | |
| 82 | Mike Piazza* | .3797 | 1997 | |
| 83 | Gabriel Hodge | .3795 | 2018 | |
| 83 | Buster Posey | .3795 | 2017 | |
| 85 | Nick Taylor | .3792 | 2021 | |
| 86 | Paul Griggs | .3787 | 2018 | |
| 87 | Geovany Soto | .3768 | 2011 | |
| 88 | Michael Barrett* | .3767 | 2001 | |
| 89 | Ed Sprague Jr* | .3766 | 1994 | |
| 90 | Victor Martinez* | .3764 | 2007 | |
| 91 | Victor Martinez* | .3760 | 2009 | |
| 92 | Michael Barrett* | .3756 | 2002 | |
| 93 | Michael Barrett* | .3746 | 2004 | |
| 94 | Ed Sprague Jr* | .3744 | 1999 | |
| 94 | Todd Greene* | .3744 | 2002 | |
| 96 | Roberto Betancourt | .3743 | 2018 | |
| 97 | Ray Craig# | .3729 | 2029 | |
| 98 | Mike Sweeney | .3727 | 1996 | |
| 99 | Ben Davis | .3726 | 2006 | |
| 100 | Joe Mauer* | .3723 | 2012 |
