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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Xie-li Pian | .4733 | 1970 | |
| 2 | Francisco Mendoza* | .4625 | 1978 | |
| 3 | Sherwood Britton | .4544 | 1999 | |
| 4 | Mike Davies | .4443 | 1996 | |
| 5 | Francisco Mendoza* | .4441 | 1977 | |
| 6 | Campbell Verhoek | .4427 | 1975 | |
| 7 | Dan Jamison | .4407 | 1995 | |
| 8 | Mark Sharp | .4385 | 1996 | |
| 9 | Jay Moore# | .4379 | 2020 | |
| 10 | Francisco Mendoza* | .4365 | 1976 | |
| 11 | Mike Davies | .4354 | 1995 | |
| 12 | Jeff Cooper | .4339 | 2002 | |
| 13 | Francisco Mendoza* | .4317 | 1980 | |
| 14 | Lúcio Ortíz | .4307 | 2002 | |
| 15 | Jesús Tapia | .4298 | 2002 | |
| 16 | Sherwood Britton | .4284 | 2007 | |
| 17 | Porter Scott* | .4257 | 1980 | |
| 18 | Dan Johnson* | .4205 | 1992 | |
| 19 | Jesús Valentín | .4181 | 1977 | |
| 20 | Dale Grant | .4177 | 1999 | |
| 21 | Porter Scott* | .4163 | 1989 | |
| 22 | Xie-li Pian | .4154 | 1972 | |
| 23 | Jeffrey Lyons | .4151 | 1970 | |
| 24 | Pancho Nevárez | .4110 | 1976 | |
| 25 | Xie-li Pian | .4107 | 1973 | |
| 26 | Lúcio Ortíz | .4100 | 1994 | |
| 27 | Sherwood Britton | .4097 | 1997 | |
| 28 | Sherwood Britton | .4093 | 1996 | |
| 28 | Porter Scott* | .4093 | 1990 | |
| 30 | Dusty Hardy | .4091 | 2009 | |
| 30 | Kyle Gregg | .4091 | 1985 | |
| 32 | Carlos Valentín | .4085 | 1995 | |
| 33 | John Wagner | .4083 | 2003 | |
| 34 | Ned Brown | .4081 | 1999 | |
| 35 | Heshel Himmelfarb | .4077 | 1999 | |
| 36 | Brandon Doak | .4073 | 2006 | |
| 37 | Juan Villegas | .4071 | 1980 | |
| 38 | Kyle Gregg | .4067 | 1983 | |
| 39 | Mark Sharp | .4062 | 1994 | |
| 40 | Brandon Doak | .4056 | 2002 | |
| 41 | Ramón Lucero | .4050 | 1977 | |
| 42 | Ramón Camacho | .4049 | 1985 | |
| 43 | Porter Scott* | .4048 | 1982 | |
| 43 | Ismael Martínez | .4048 | 2010 | |
| 45 | Jay Moore# | .4038 | 2019 | |
| 46 | Mike Davies | .4023 | 1998 | |
| 47 | Jorge Martínez# | .4021 | 2019 | |
| 48 | George Reed# | .4020 | 2020 | |
| 49 | Dan Johnson* | .4017 | 1995 | |
| 50 | Xie-li Pian | .4007 | 1975 | |
| 51 | Kyle Gregg | .4003 | 1990 | |
| 52 | Mike Davies | .3988 | 1999 | |
| 53 | Rob Bailey# | .3987 | 2014 | |
| 54 | Neil Abrams# | .3979 | 2023 | |
| 54 | Emmanuel Morán | .3979 | 1970 | |
| 56 | Brandon Doak | .3974 | 2005 | |
| 57 | Vincent Griffin# | .3970 | 2014 | |
| 58 | Lyndon Bray | .3969 | 1993 | |
| 59 | Javier García | .3963 | 2005 | |
| 60 | Alfredo Silva | .3961 | 2006 | |
| 61 | José García# | .3960 | 2022 | |
| 62 | Orlando Torres | .3955 | 1998 | |
| 63 | Brian Bell | .3954 | 1978 | |
| 63 | Garry Knowles | .3954 | 1980 | |
| 65 | Pancho Nevárez | .3953 | 1977 | |
| 65 | Sherwood Britton | .3953 | 2000 | |
| 67 | Porter Scott* | .3945 | 1985 | |
| 67 | José Morales | .3945 | 1978 | |
| 69 | Jeffrey Lyons | .3943 | 1971 | |
| 70 | John Wagner | .3942 | 2004 | |
| 71 | Alberto Soriano | .3937 | 1979 | |
| 72 | Corey Dillon | .3922 | 1996 | |
| 72 | Francisco Valera | .3922 | 2002 | |
| 74 | Reggie Phillips | .3920 | 1993 | |
| 75 | Orlando Torres | .3918 | 1999 | |
| 76 | Nobuatsu Ishii# | .3916 | 2023 | |
| 77 | Brit Cooper | .3910 | 1980 | |
| 78 | Dan Johnson* | .3908 | 1991 | |
| 79 | Damián Gonzáles | .3906 | 1999 | |
| 80 | Dan Mosley | .3902 | 1976 | |
| 81 | Júlio Padilla | .3898 | 1999 | |
| 81 | Ernesto Germán | .3898 | 1995 | |
| 81 | Kyle Gregg | .3898 | 1992 | |
| 84 | Joaquín Manegdeg# | .3895 | 2019 | |
| 85 | Kurt Wells | .3894 | 1999 | |
| 85 | Chris Miller | .3894 | 2007 | |
| 85 | Artie Whitaker | .3894 | 1979 | |
| 88 | Felipe Serrano | .3893 | 1991 | |
| 89 | Brandon Doak | .3887 | 2003 | |
| 90 | Matt Peterson# | .3886 | 2014 | |
| 91 | Garry Knowles | .3883 | 1979 | |
| 92 | José Morales | .3882 | 1980 | |
| 93 | Joey Crowley | .3881 | 2007 | |
| 94 | Mark Sharp | .3880 | 1995 | |
| 95 | Francisco Mendoza* | .3868 | 1983 | |
| 96 | Carlos Flores | .3866 | 1991 | |
| 96 | Jorge Martínez# | .3866 | 2020 | |
| 98 | Brady Erwin | .3862 | 1977 | |
| 99 | Gary Baker | .3860 | 1974 | |
| 99 | Louis-Jacob Ouellette | .3860 | 1996 |
