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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Tim McCorkle* | .4103 | 2016 | |
| 2 | Aaron Parris | .4014 | 2014 | |
| 3 | Pedro Napoleoni | .3980 | 2028 | |
| 4 | Jon Laufer | .3965 | 2001 | |
| 5 | Eric Crepeau | .3950 | 2014 | |
| 6 | Alfredo Fargas* | .3912 | 1993 | |
| 7 | Tim McCorkle* | .3907 | 2013 | |
| 8 | Gene Brinkman | .3883 | 2002 | |
| 9 | Jon Laufer | .3880 | 2005 | |
| 10 | Luis Garza | .3878 | 1988 | |
| 11 | Glen Dexter | .3859 | 2005 | |
| 12 | Jason Scott | .3858 | 2014 | |
| 13 | Joe Murphy | .3856 | 1980 | |
| 14 | Alex Pena* | .3846 | 2022 | |
| 15 | Kinnon Ketcheson | .3842 | 2012 | |
| 16 | Jon Laufer | .3841 | 2000 | |
| 17 | Kinnon Ketcheson | .3833 | 2013 | |
| 17 | Luis Recendiz* | .3833 | 2006 | |
| 19 | Dan Haynes | .3831 | 2008 | |
| 20 | Aaron Parris | .3827 | 2017 | |
| 21 | Ben Umfleet | .3824 | 1997 | |
| 22 | Luke Storey# | .3805 | 2049 | |
| 23 | Gene Brinkman | .3796 | 2004 | |
| 24 | Zach Parent | .3791 | 1995 | |
| 25 | Miguel Felix | .3788 | 2036 | |
| 26 | Dan Haynes | .3780 | 2009 | |
| 27 | Tim McCorkle* | .3761 | 2011 | |
| 28 | Sax Adams | .3755 | 2041 | |
| 29 | Alex Pena* | .3752 | 2021 | |
| 30 | Jon Laufer | .3750 | 2002 | |
| 31 | Liam Sena# | .3743 | 2045 | |
| 32 | Jon Laufer | .3741 | 2007 | |
| 33 | Mason Cox | .3735 | 2018 | |
| 34 | Hector Ibarra | .3734 | 2012 | |
| 35 | Mason Cox | .3728 | 2017 | |
| 36 | Andy Foy | .3727 | 1993 | |
| 37 | Miguel Felix | .3723 | 2032 | |
| 38 | Luis Lerma | .3721 | 1987 | |
| 39 | Kurt Gore | .3709 | 2004 | |
| 40 | Alex Pena* | .3708 | 2011 | |
| 41 | Alfredo Borrero | .3705 | 1988 | |
| 42 | Andy Foy | .3703 | 1992 | |
| 43 | Andy Foy | .3702 | 1987 | |
| 43 | Pedro Napoleoni | .3702 | 2027 | |
| 45 | Pedro Napoleoni | .3700 | 2024 | |
| 46 | Yonal Gonzalez | .3696 | 2042 | |
| 47 | Dan Haynes | .3694 | 2014 | |
| 48 | Pedro Napoleoni | .3691 | 2025 | |
| 48 | Luis Campos | .3691 | 1990 | |
| 50 | Ted Quainton | .3690 | 2000 | |
| 51 | Juan Carrillo | .3689 | 2004 | |
| 52 | Joe Murphy | .3688 | 1989 | |
| 53 | Josh Hornbeck | .3686 | 1987 | |
| 54 | Alfredo Fargas* | .3683 | 1987 | |
| 54 | Calvin Krog | .3683 | 2043 | |
| 54 | Takaaki Kato | .3683 | 2036 | |
| 57 | Takaaki Kato | .3682 | 2034 | |
| 58 | Kurt Gore | .3679 | 2007 | |
| 58 | Sang-min Yoo | .3679 | 2015 | |
| 60 | Alex Pena* | .3677 | 2014 | |
| 61 | Josh Wright | .3676 | 2011 | |
| 62 | Mason Cox | .3673 | 2020 | |
| 63 | Luis Recendiz* | .3672 | 2000 | |
| 63 | Jim Hall | .3672 | 1993 | |
| 65 | Stu Kamm | .3659 | 2016 | |
| 66 | Calvin Krog | .3655 | 2041 | |
| 66 | Luis Recendiz* | .3655 | 2010 | |
| 68 | Tim McCorkle* | .3654 | 2019 | |
| 68 | Luis Recendiz* | .3654 | 2004 | |
| 70 | Dan Haynes | .3652 | 2011 | |
| 71 | Tim McCorkle* | .3643 | 2015 | |
| 71 | Tim McCorkle* | .3643 | 2018 | |
| 71 | Jon Laufer | .3643 | 2004 | |
| 74 | Andy Foy | .3642 | 1994 | |
| 75 | Luis Recendiz* | .3636 | 1999 | |
| 76 | Yonal Gonzalez | .3635 | 2036 | |
| 76 | Jaden Feldman* | .3635 | 2030 | |
| 76 | Luis Recendiz* | .3635 | 2011 | |
| 79 | Jon Laufer | .3633 | 2003 | |
| 79 | Jim Hall | .3633 | 1994 | |
| 79 | Luis Lerma | .3633 | 1990 | |
| 82 | Aaron Parris | .3631 | 2015 | |
| 82 | Kurt Gore | .3631 | 2006 | |
| 82 | Juan Chavira | .3631 | 1989 | |
| 85 | J.D. Summer | .3630 | 2005 | |
| 86 | Ben Umfleet | .3624 | 1989 | |
| 87 | Alex Pena* | .3620 | 2013 | |
| 88 | Chris Corey | .3613 | 2022 | |
| 89 | Alfredo Fargas* | .3612 | 1985 | |
| 90 | Felix Camacho | .3607 | 2010 | |
| 91 | Isaac Joseph# | .3604 | 2047 | |
| 92 | Luis Zamora | .3602 | 1986 | |
| 93 | Ben Umfleet | .3601 | 1990 | |
| 94 | Ben Callegari | .3599 | 2019 | |
| 94 | Andy Foy | .3599 | 1986 | |
| 96 | Alfredo Fargas* | .3592 | 1986 | |
| 97 | Naoki Kataoka | .3590 | 1996 | |
| 98 | Luis Lerma | .3589 | 1984 | |
| 99 | Hector Ibarra | .3588 | 2014 | |
| 99 | Eric Crepeau | .3588 | 2017 |
