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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Pat Newell* | .4254 | 1980-1994 | |
| 2 | Alex Rivera* | .4217 | 2019-2042 | |
| 3 | Ki-tak Kim | .4164 | 2005-2020 | |
| 4 | Ernesto Lugo | .4043 | 1980-1990 | |
| 5 | Hisato Umeda | .4035 | 1980-1987 | |
| 6 | Esteban Cuellar | .4016 | 1980-1989 | |
| 7 | Juan Soto | .4005 | 2010-2020 | |
| 8 | Jason Sukow* | .4002 | 2024-2041 | |
| 9 | Tony Campo | .3992 | 2027-2041 | |
| 10 | Juan Morales* | .3961 | 1991-2007 | |
| 11 | Rhett Ward* | .3960 | 1989-2005 | |
| 12 | Silky Flores* | .3959 | 2007-2021 | |
| 13 | Luis Vargas* | .3957 | 1989-2006 | |
| 14 | A.J. Cordle | .3944 | 1980-1991 | |
| 15 | Eric Hershberger* | .3930 | 1981-1998 | |
| 16 | Eric Tejeda* | .3927 | 2022-2038 | |
| 17 | Archer Carol# | .3897 | 2039-2050 | |
| 18 | John Morgan | .3890 | 2013-2024 | |
| 19 | Luis Madrigales | .3887 | 1998-2011 | |
| 20 | Esteban Bermeo* | .3881 | 1989-2007 | |
| 21 | Ron Resley | .3877 | 1999-2012 | |
| 21 | Tony Flores* | .3877 | 2008-2022 | |
| 23 | Leon Aguilar* | .3872 | 2018-2039 | |
| 23 | Ian Ott* | .3872 | 1980-1997 | |
| 25 | Dave Carrico | .3871 | 2007-2018 | |
| 25 | Juan Arzola | .3871 | 1998-2006 | |
| 27 | Jeff Mason | .3867 | 1980-1989 | |
| 28 | Eric Campos | .3856 | 1981-1995 | |
| 29 | Chris Medrano | .3853 | 2012-2021 | |
| 30 | Josh Franklin* | .3849 | 1981-1997 | |
| 31 | Earl Witter | .3845 | 2016-2024 | |
| 32 | Leon Leal | .3838 | 2025-2035 | |
| 33 | Mike Wilson | .3836 | 2015-2020 | |
| 34 | Phil Schmidt | .3835 | 1991-2006 | |
| 35 | Juan Moreno | .3832 | 2005-2018 | |
| 36 | Alpha Ampy | .3827 | 1984-1998 | |
| 37 | Jordan Ramos | .3825 | 2012-2028 | |
| 38 | Donte Harge | .3823 | 2000-2013 | |
| 39 | Tim Fleming | .3820 | 2002-2015 | |
| 40 | Javier Castillo | .3812 | 2011-2020 | |
| 41 | Angel Bonifacio* | .3811 | 2028-2043 | |
| 42 | Chad Sellers | .3809 | 1980-1991 | |
| 43 | D.J. Ferrarini | .3805 | 2001-2015 | |
| 44 | John Schwab | .3803 | 2007-2021 | |
| 44 | Oscar Marrache | .3803 | 2003-2012 | |
| 46 | Sergio Benites | .3802 | 1990-2002 | |
| 47 | Johnny Flint | .3789 | 2013-2027 | |
| 48 | Luis Tamayo | .3788 | 1980-1990 | |
| 49 | Alexeis Shoemaker | .3787 | 2006-2020 | |
| 50 | Ben Tucker | .3780 | 1987-2001 | |
| 51 | Dana Massaro | .3778 | 1999-2010 | |
| 52 | Gabe Sandoval* | .3777 | 2022-2041 | |
| 53 | Lupe Villegas | .3776 | 2001-2015 | |
| 53 | Dave Burns | .3776 | 2003-2023 | |
| 55 | Hirofumi Kihara | .3775 | 2017-2027 | |
| 56 | Chris Scharf | .3773 | 2002-2015 | |
| 57 | Joe Sparrow* | .3772 | 2023-2043 | |
| 57 | Tony Avery | .3772 | 2020-2035 | |
| 59 | Ricky Sabedra | .3770 | 2014-2025 | |
| 60 | Damian Gomez | .3768 | 2030-2041 | |
| 60 | Esteban Carrillo | .3768 | 1980-1989 | |
| 60 | Ryan Pruitt | .3768 | 2008-2018 | |
| 63 | Mike Ellis | .3766 | 2007-2018 | |
| 63 | Juan Banegas | .3766 | 1995-2006 | |
| 65 | Jeff Traylor | .3764 | 2002-2009 | |
| 66 | Gene Gaiters | .3762 | 2006-2016 | |
| 67 | Pat Covelli | .3756 | 2000-2016 | |
| 68 | Rogelio Orellana | .3755 | 1994-2002 | |
| 68 | Jacob Shaver | .3755 | 2012-2027 | |
| 70 | Steve Parsons | .3752 | 2002-2014 | |
| 70 | Mike Coggin | .3752 | 1996-2008 | |
| 72 | Ben Waters# | .3750 | 2046-2050 | |
| 72 | Dave Mercado | .3750 | 1989-1999 | |
| 74 | Joel Kos | .3746 | 2010-2018 | |
| 75 | Alex Perdomo* | .3744 | 2017-2035 | |
| 76 | Dan Strayer | .3742 | 1980-1991 | |
| 77 | Jorge Tarango | .3740 | 1981-1992 | |
| 78 | Sean Kravitz | .3737 | 1980-1989 | |
| 79 | Yasutoshi Goto | .3735 | 1999-2009 | |
| 79 | Jeremy Reese | .3735 | 2007-2018 | |
| 81 | Tony Ojeda* | .3732 | 2035-2049 | |
| 82 | Angel Trujillo* | .3730 | 2009-2026 | |
| 82 | Jeremy Campbell | .3730 | 2034-2045 | |
| 84 | Rogelio Trevino* | .3727 | 1980-1991 | |
| 85 | Ismael Estrada* | .3726 | 1993-2008 | |
| 85 | Arturo Rivas | .3726 | 1992-2000 | |
| 85 | Luís Montero# | .3726 | 2035-2050 | |
| 88 | Victor de la Parra | .3725 | 1985-1999 | |
| 88 | Alex Cardenas | .3725 | 1983-1998 | |
| 88 | Jimmy McBroom | .3725 | 1980-1991 | |
| 91 | Luis Aguilar | .3724 | 1989-2001 | |
| 92 | Luis Salazar | .3722 | 2001-2012 | |
| 93 | Shawn Morrell* | .3720 | 2035-2047 | |
| 93 | Jon Perez | .3720 | 2021-2031 | |
| 95 | Sam Halterman | .3717 | 1997-2010 | |
| 95 | Jong-suk Kym | .3717 | 1988-1994 | |
| 97 | Landon Ramsburg# | .3716 | 2045-2050 | |
| 98 | Tim Kaufman | .3715 | 1980-1989 | |
| 99 | Emmanuel Saavedra | .3714 | 2025-2035 | |
| 100 | Nate Fort* | .3712 | 2002-2016 |
