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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Juan Medina | .4374 | 2006 | |
| 2 | Jake Hoskins | .4281 | 2010 | |
| 3 | Miles Hill | .4261 | 2018 | |
| 4 | Mitch Marsh | .4255 | 2023 | |
| 5 | Joe Marble | .4241 | 2013 | |
| 6 | Ryan Garland | .4236 | 2022 | |
| 7 | Lawrence Dickson | .4233 | 2039 | |
| 8 | Armon King | .4210 | 2037 | |
| 9 | Brent Lackey | .4204 | 2025 | |
| 10 | Juan Madrigal | .4194 | 2007 | |
| 11 | Tim Gable | .4183 | 2007 | |
| 12 | Norm Watkins | .4178 | 2008 | |
| 13 | Javier Castillo | .4167 | 2023 | |
| 14 | Noah Duff# | .4151 | 2040 | |
| 14 | Tim Gable | .4151 | 2005 | |
| 16 | Griffin Allen | .4141 | 2043 | |
| 17 | Odon Gil# | .4120 | 2044 | |
| 18 | Lazaro Lizan | .4095 | 2040 | |
| 19 | Kevin Holt | .4064 | 2008 | |
| 20 | Nate Conston | .4060 | 2034 | |
| 21 | Luis Aguilar | .4056 | 2010 | |
| 22 | Jeremy Campbell | .4049 | 2034 | |
| 23 | John Morgan | .4048 | 2014 | |
| 23 | Sagrario Yanez# | .4048 | 2043 | |
| 25 | Amos Badali | .4046 | 2035 | |
| 26 | Efrain Lopez | .4042 | 2016 | |
| 27 | Mark Kerr | .4041 | 2020 | |
| 28 | Luis Valles | .4028 | 2009 | |
| 29 | Luis Aguilar | .4021 | 2007 | |
| 30 | Josh Wingard | .4017 | 2006 | |
| 31 | Juan Escoto | .4010 | 2005 | |
| 32 | Colt Morris | .4008 | 2008 | |
| 33 | Ryan Bilotta | .4004 | 2010 | |
| 34 | Ryan Bilotta | .3993 | 2011 | |
| 35 | Anastacio Bamba# | .3991 | 2045 | |
| 36 | Antonio Martinez | .3988 | 2036 | |
| 37 | Max Parrillo | .3982 | 2005 | |
| 38 | Ben Barry# | .3977 | 2049 | |
| 39 | Dennie Knapp | .3958 | 2036 | |
| 39 | Marco Rivera | .3958 | 2015 | |
| 39 | Manny Boler | .3958 | 2013 | |
| 42 | Luis Alanis | .3956 | 2004 | |
| 43 | Ken Amodei | .3953 | 2016 | |
| 44 | Ernesto Jiminez | .3945 | 2019 | |
| 44 | Conrad Walsh | .3945 | 2019 | |
| 46 | Kevin Messner | .3944 | 2007 | |
| 47 | Mike Martin | .3941 | 2020 | |
| 48 | Mike Gebhart | .3939 | 2010 | |
| 49 | Andy Westmoreland | .3937 | 2038 | |
| 50 | Mitch Marsh | .3936 | 2015 | |
| 51 | Orlando Pimentel | .3935 | 2034 | |
| 52 | Bobby Guzman | .3932 | 2029 | |
| 53 | Luis Serrano | .3923 | 2004 | |
| 54 | Jorge Esqueda | .3918 | 2004 | |
| 54 | Luis Aguilar | .3918 | 2011 | |
| 56 | Jon Monford | .3916 | 2008 | |
| 57 | Peter Patterson | .3915 | 2019 | |
| 58 | Daron Brandon# | .3911 | 2045 | |
| 59 | Germain Ulleri | .3902 | 2036 | |
| 60 | Antonio Otero | .3898 | 2011 | |
| 61 | Jared Bolanos | .3891 | 2006 | |
| 62 | Pato Arroyo | .3889 | 2043 | |
| 63 | Max Parrillo | .3888 | 2007 | |
| 64 | Josh Rastatter | .3883 | 2024 | |
| 65 | Germain Ulleri | .3881 | 2035 | |
| 66 | Dennis Young | .3871 | 2016 | |
| 67 | Nelson Guerrero | .3861 | 2017 | |
| 68 | Jim Kozak | .3855 | 2023 | |
| 68 | Leon Leal | .3855 | 2027 | |
| 68 | Jake Castille | .3855 | 2030 | |
| 71 | Husain Robinson | .3853 | 2040 | |
| 72 | Chet Ross# | .3850 | 2046 | |
| 73 | John Hertzog | .3847 | 2031 | |
| 74 | John Langlois | .3846 | 2016 | |
| 75 | Tony Martinez | .3845 | 2020 | |
| 76 | Justin Patton | .3836 | 2018 | |
| 76 | Kevin Johnson | .3836 | 2019 | |
| 78 | Luis Infante | .3831 | 2004 | |
| 78 | Brad Adams | .3831 | 2021 | |
| 78 | Hector Miranda | .3831 | 2023 | |
| 81 | Heriberto Carrillo | .3830 | 2020 | |
| 82 | Bobby Valladares | .3828 | 2007 | |
| 83 | Edgar Rojas | .3826 | 2012 | |
| 84 | Roberto Vasquez | .3825 | 2037 | |
| 85 | Alfredo Villaman | .3822 | 2004 | |
| 86 | Maddox Brosseau | .3820 | 2008 | |
| 86 | Jimmy Trott | .3820 | 2020 | |
| 88 | Ricardo Fernandez | .3818 | 2015 | |
| 89 | Steve Stevens | .3817 | 2012 | |
| 89 | James Wesley | .3817 | 2042 | |
| 91 | Edgar Rojas | .3816 | 2011 | |
| 91 | Sergio Romero | .3816 | 2010 | |
| 93 | Ignacio Parra | .3810 | 2012 | |
| 94 | Andy Ibarra | .3802 | 2026 | |
| 95 | George Ormiston | .3801 | 2040 | |
| 95 | Rory Prevost | .3801 | 2006 | |
| 95 | Jason Cohen | .3801 | 2017 | |
| 98 | Erwin Strandlund# | .3800 | 2049 | |
| 99 | Van Cillo | .3799 | 2040 | |
| 100 | Rodolfo Cadilhe | .3798 | 2004 |
