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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Jesús Valentín | .4939 | 1970 | |
| 2 | Lúcio Ortíz | .4576 | 1999 | |
| 3 | Francisco Mendoza* | .4575 | 1975 | |
| 4 | Salvador Piña | .4499 | 1997 | |
| 5 | Ronald Ramsey* | .4417 | 1978 | |
| 6 | Ed Moran* | .4389 | 2012 | |
| 7 | Francisco Mendoza* | .4382 | 1972 | |
| 8 | Ronald Ramsey* | .4380 | 1977 | |
| 9 | Miguel López | .4365 | 2005 | |
| 10 | Francisco Mendoza* | .4333 | 1974 | |
| 11 | Larry Gillespie | .4317 | 2002 | |
| 12 | Lúcio Ortíz | .4310 | 2005 | |
| 13 | Travis Hall | .4305 | 1997 | |
| 14 | Donald Wilson | .4295 | 1997 | |
| 15 | Ed Moran* | .4290 | 2014 | |
| 15 | Ed Moran* | .4290 | 2015 | |
| 17 | Lúcio Ortíz | .4286 | 1998 | |
| 18 | Clyde Watkins | .4272 | 1999 | |
| 19 | Miguel López | .4260 | 2002 | |
| 20 | Chris Miller | .4259 | 2002 | |
| 21 | Ed Moran* | .4257 | 2016 | |
| 22 | Rob Bailey# | .4249 | 2022 | |
| 23 | Jay Moore# | .4241 | 2022 | |
| 24 | Ronald Ramsey* | .4239 | 1979 | |
| 25 | Alfredo Silva | .4231 | 2007 | |
| 26 | Tommy Watts | .4217 | 1973 | |
| 27 | Brandon Webster | .4216 | 1979 | |
| 28 | Alfredo Silva | .4214 | 2002 | |
| 29 | Ismael Martínez | .4211 | 2011 | |
| 30 | Lúcio Ortíz | .4207 | 2004 | |
| 31 | Larry Gillespie | .4197 | 2000 | |
| 32 | Miguel López | .4188 | 2007 | |
| 33 | Francisco Mendoza* | .4186 | 1973 | |
| 34 | John Williams | .4185 | 1970 | |
| 34 | Tynan Cooke# | .4185 | 2015 | |
| 36 | Tommy Watts | .4181 | 1979 | |
| 37 | Jonathan Rogers* | .4172 | 1993 | |
| 38 | William Walker# | .4168 | 2016 | |
| 39 | Donald Wilson | .4167 | 1995 | |
| 40 | Javier García | .4164 | 2004 | |
| 41 | Porter Scott* | .4149 | 1981 | |
| 42 | William Walker# | .4140 | 2020 | |
| 42 | Lorenzo Rivera | .4140 | 2009 | |
| 44 | Lúcio Ortíz | .4139 | 1997 | |
| 45 | Orlando Torres | .4132 | 1997 | |
| 46 | Sean Cannon | .4131 | 2010 | |
| 46 | Martin Simpson | .4131 | 2007 | |
| 48 | Luis Manuel Romero | .4129 | 2010 | |
| 49 | Jesús Flores | .4114 | 1999 | |
| 50 | Tommy Watts | .4106 | 1976 | |
| 50 | Jay Moore# | .4106 | 2021 | |
| 52 | Porter Scott* | .4093 | 1987 | |
| 52 | Ed George | .4093 | 1995 | |
| 54 | Jay Moore# | .4085 | 2023 | |
| 54 | Jonathan Rogers* | .4085 | 1997 | |
| 56 | Ed Moran* | .4080 | 2019 | |
| 57 | Lúcio Ortíz | .4073 | 2003 | |
| 58 | Tynan Cooke# | .4071 | 2022 | |
| 59 | Lúcio Ortíz | .4068 | 1995 | |
| 60 | Fletcher Martin | .4066 | 1998 | |
| 61 | Porter Scott* | .4065 | 1994 | |
| 62 | Corey Dillon | .4060 | 1990 | |
| 63 | Ed Moran* | .4059 | 2013 | |
| 64 | Jonathan Rogers* | .4042 | 1994 | |
| 65 | Juan Romero | .4032 | 1970 | |
| 66 | Donald Wilson | .4029 | 1993 | |
| 66 | Ronald Ramsey* | .4029 | 1984 | |
| 68 | Pancho Nevárez | .4026 | 1975 | |
| 69 | Tynan Cooke# | .4021 | 2018 | |
| 70 | Phil Graves | .4014 | 2005 | |
| 71 | Quinn Wheeler | .4007 | 1994 | |
| 72 | Chris Kilvington | .4004 | 1999 | |
| 73 | Lee tai hoi Zeng | .3997 | 1999 | |
| 73 | Reynaldo Aguirre | .3997 | 1995 | |
| 73 | Martin Simpson | .3997 | 2006 | |
| 76 | Juan Romero | .3988 | 1977 | |
| 77 | Tommy Watts | .3984 | 1977 | |
| 78 | Roberto Cruz | .3975 | 2002 | |
| 79 | Augusto Cardenas | .3974 | 1978 | |
| 80 | Joe May# | .3972 | 2023 | |
| 80 | Miguel López | .3972 | 2009 | |
| 82 | Jorge Sánchez | .3971 | 2013 | |
| 83 | Martin Simpson | .3970 | 2002 | |
| 84 | Rob Bailey# | .3963 | 2017 | |
| 85 | Theodore Craig | .3960 | 2002 | |
| 86 | Alfredo Silva | .3958 | 2005 | |
| 87 | Dan Parker | .3953 | 1999 | |
| 88 | Robert Conklin | .3951 | 1978 | |
| 88 | Porter Scott* | .3951 | 1984 | |
| 90 | Tynan Cooke# | .3948 | 2021 | |
| 91 | Martin Simpson | .3946 | 1999 | |
| 92 | Martin Simpson | .3944 | 2008 | |
| 93 | Larry Gillespie | .3942 | 1996 | |
| 94 | Jorge Sánchez | .3939 | 2015 | |
| 95 | Shawn Abbotson | .3935 | 1970 | |
| 96 | Leonard Lynch | .3927 | 2002 | |
| 96 | Javier García | .3927 | 2008 | |
| 98 | Jonathan Rogers* | .3923 | 1995 | |
| 98 | Tristan Jaffe | .3923 | 2011 | |
| 100 | Tynan Cooke# | .3920 | 2017 |
