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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Pedro López* | .4633 | 1980 | |
| 2 | Pedro López* | .4564 | 1981 | |
| 3 | Pedro López* | .4551 | 1976 | |
| 4 | Juan Freitas* | .4478 | 1984 | |
| 5 | Pedro López* | .4414 | 1977 | |
| 6 | George Thomason | .4388 | 1980 | |
| 7 | Jeffery Becker | .4377 | 1999 | |
| 8 | Edward Rice | .4363 | 1970 | |
| 9 | Roberto Ferreira | .4361 | 1970 | |
| 10 | Artie Bicknell* | .4356 | 1995 | |
| 11 | John Hayes | .4353 | 1970 | |
| 12 | Tynan Cooke# | .4331 | 2014 | |
| 13 | Henry Winman | .4327 | 1992 | |
| 14 | Miguel López* | .4318 | 2002 | |
| 14 | Desmond Irvin# | .4318 | 2006 | |
| 16 | Clinton Watkins | .4308 | 1980 | |
| 17 | Pedro López* | .4283 | 1984 | |
| 18 | Roberto Ferreira | .4281 | 1975 | |
| 19 | Adrian McFarland# | .4269 | 2012 | |
| 20 | Artie Bicknell* | .4258 | 1994 | |
| 21 | Adrian McFarland# | .4245 | 2011 | |
| 22 | Juan Freitas* | .4244 | 1978 | |
| 23 | Jack Jordan | .4236 | 1974 | |
| 24 | Chris Haines | .4224 | 2015 | |
| 25 | Lee Dalton | .4202 | 2005 | |
| 26 | Carlos Ramírez | .4198 | 1975 | |
| 27 | Miguel López* | .4170 | 2005 | |
| 28 | Roderick Mosley* | .4154 | 2007 | |
| 29 | Andrés Rentería | .4151 | 1997 | |
| 30 | Armando Rodríguez# | .4147 | 2023 | |
| 31 | Desmond Irvin# | .4144 | 2005 | |
| 32 | Pedro López* | .4143 | 1983 | |
| 33 | Luis López# | .4135 | 2020 | |
| 34 | Juan Freitas* | .4124 | 1987 | |
| 35 | Adrian McFarland# | .4119 | 2020 | |
| 36 | Lee Dalton | .4116 | 2006 | |
| 37 | Pedro López* | .4114 | 1986 | |
| 38 | John Hayes | .4113 | 1976 | |
| 39 | Ty Johnston | .4107 | 2010 | |
| 40 | Michael Long | .4103 | 1986 | |
| 41 | Trevor Miller | .4095 | 1978 | |
| 42 | Carl Morgan | .4093 | 1995 | |
| 43 | Daniel Jackson | .4092 | 1997 | |
| 44 | Arthur Gore | .4091 | 1998 | |
| 45 | José Martínez | .4090 | 2008 | |
| 46 | Edward Rice | .4080 | 1972 | |
| 47 | Ken Backus# | .4076 | 2020 | |
| 48 | Steve Lee | .4061 | 2008 | |
| 49 | Roberto Ferreira | .4053 | 1971 | |
| 50 | Jake Coad | .4043 | 2008 | |
| 51 | Mario Rodríguez | .4042 | 1981 | |
| 52 | Ken Backus# | .4031 | 2018 | |
| 52 | Jeffery Becker | .4031 | 1997 | |
| 54 | Juan Freitas* | .4030 | 1985 | |
| 55 | Bill Knapp | .4025 | 2008 | |
| 56 | Gary Morrow | .4024 | 1970 | |
| 56 | Carlos Ramírez | .4024 | 1976 | |
| 58 | Vincent Griffin# | .4023 | 2017 | |
| 59 | Juan Freitas* | .4018 | 1986 | |
| 60 | Brian Porcell | .4016 | 1974 | |
| 61 | Michael Long | .4015 | 1983 | |
| 62 | Martín Díaz | .4012 | 1988 | |
| 62 | Pedro López* | .4012 | 1978 | |
| 62 | Desmond Irvin# | .4012 | 2015 | |
| 65 | Pedro López* | .4009 | 1985 | |
| 66 | Roderick Mosley* | .4008 | 2005 | |
| 66 | Andy Green | .4008 | 2006 | |
| 68 | Freddie Fleming | .4007 | 1990 | |
| 69 | Armando Rodríguez# | .4006 | 2018 | |
| 70 | Armando Rodríguez# | .4000 | 2022 | |
| 71 | Brian Porcell | .3997 | 1975 | |
| 72 | Ken Backus# | .3994 | 2017 | |
| 73 | Edward Rice | .3988 | 1971 | |
| 74 | Pedro López* | .3983 | 1975 | |
| 75 | Roderick Mosley* | .3980 | 2004 | |
| 76 | Mike Elkins | .3979 | 1972 | |
| 77 | Manny González# | .3977 | 2022 | |
| 78 | Jesús Llesemía | .3975 | 2013 | |
| 78 | Bruce Dickinson | .3975 | 1979 | |
| 78 | Jerome MacKnight | .3975 | 1985 | |
| 78 | Chris Haines | .3975 | 2014 | |
| 82 | César Javier | .3974 | 1980 | |
| 83 | Chris Haines | .3967 | 2016 | |
| 84 | Thomas Jenkins | .3960 | 2012 | |
| 84 | Jake Coad | .3960 | 2009 | |
| 86 | Ryan Sanderson | .3958 | 2013 | |
| 87 | Roy Green | .3956 | 1970 | |
| 88 | Gary Morrow | .3949 | 1975 | |
| 89 | Jerome MacKnight | .3940 | 1984 | |
| 90 | Andrés Rentería | .3938 | 2002 | |
| 91 | Tom Terry | .3936 | 2013 | |
| 92 | Vicente Fernández# | .3932 | 2020 | |
| 93 | Gary Morrow | .3929 | 1976 | |
| 94 | Fred Andrews | .3928 | 1987 | |
| 95 | Rick Mooney | .3925 | 1979 | |
| 96 | Bartolo Aguilar | .3924 | 2007 | |
| 97 | Luis Huerta | .3922 | 1977 | |
| 97 | Pedro López* | .3922 | 1982 | |
| 97 | Roberto Ferreira | .3922 | 1974 | |
| 97 | Marshall Gregory | .3922 | 1970 |
