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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Bill Muller# | .4803 | 2022 | |
| 2 | Dave O'Reardan | .4593 | 1982 | |
| 3 | Rubén Ramírez# | .4548 | 2016 | |
| 4 | Fernando Rangel | .4525 | 1983 | |
| 5 | Danny Welch | .4465 | 1991 | |
| 6 | Brian Morgan | .4448 | 1985 | |
| 7 | Donald Forrest# | .4429 | 2008 | |
| 8 | Dave Jones | .4414 | 1990 | |
| 9 | Brian Chase | .4368 | 1984 | |
| 10 | Carl Mitchell | .4361 | 2012 | |
| 11 | Walt Stone | .4359 | 1976 | |
| 12 | Keith McGinnity | .4338 | 1982 | |
| 13 | Cooper Robinson | .4321 | 1984 | |
| 14 | Jason Boyce | .4305 | 1987 | |
| 15 | Juan Jose Delgado | .4294 | 2003 | |
| 16 | Tristan Jackson | .4293 | 1972 | |
| 17 | Joe Schroeder | .4291 | 1980 | |
| 18 | Miguel Rosales | .4288 | 1977 | |
| 19 | Brent Sousa# | .4276 | 2022 | |
| 20 | Cory Myers | .4275 | 1981 | |
| 21 | Ethan Richard# | .4267 | 2020 | |
| 22 | Jorge Carbajal | .4266 | 1990 | |
| 23 | José Castanieda | .4257 | 1986 | |
| 24 | António Flores# | .4252 | 2021 | |
| 25 | Ethan Roberts | .4244 | 1990 | |
| 26 | Russ Hairston | .4242 | 2011 | |
| 27 | Bob Rivers | .4240 | 1986 | |
| 28 | Josh Spencer | .4228 | 1990 | |
| 29 | Luther Davis# | .4221 | 2020 | |
| 30 | Bob Crowley | .4220 | 1990 | |
| 31 | Alan Davis | .4210 | 2009 | |
| 32 | Brian Chase | .4200 | 1983 | |
| 33 | Bob Crowley | .4186 | 1991 | |
| 34 | Michael Weaver | .4177 | 1988 | |
| 34 | Andrew Nelson | .4177 | 1979 | |
| 36 | Rickey Huffman | .4145 | 1990 | |
| 37 | Henry O'Sullivan | .4141 | 1982 | |
| 37 | Rob Young# | .4141 | 2017 | |
| 37 | James Day | .4141 | 1987 | |
| 40 | Sal Reynolds | .4137 | 1985 | |
| 41 | Luke Washington | .4134 | 1989 | |
| 42 | Al Holmes | .4133 | 2004 | |
| 43 | Jay Hall# | .4122 | 2015 | |
| 44 | Terry Bowen | .4119 | 1992 | |
| 44 | James Cox | .4119 | 2006 | |
| 46 | Will Harrison | .4112 | 1983 | |
| 47 | Armando Martínez | .4110 | 1988 | |
| 48 | John Schneider | .4109 | 1981 | |
| 49 | Tom Flitton# | .4108 | 2021 | |
| 50 | Keith Faulkner | .4107 | 1984 | |
| 51 | Peter Nelson | .4105 | 2000 | |
| 51 | Ken Harris | .4105 | 1987 | |
| 53 | Stan Thomas | .4098 | 1989 | |
| 54 | Lee Stone | .4096 | 1983 | |
| 54 | Tex Follitt | .4096 | 2015 | |
| 56 | Luke Washington | .4092 | 1988 | |
| 56 | Tommy Jennings | .4092 | 2008 | |
| 58 | Hou Chieu | .4082 | 1991 | |
| 59 | Ed Mitchell | .4076 | 1977 | |
| 60 | Dennis Lewis | .4072 | 1991 | |
| 61 | Peter Thomas | .4071 | 1986 | |
| 62 | Leonard May | .4070 | 1980 | |
| 63 | Antan Dimm | .4067 | 1973 | |
| 64 | Dave Ware | .4065 | 1986 | |
| 64 | Robbie Hawkins | .4065 | 1982 | |
| 66 | Leon Frederick# | .4055 | 2021 | |
| 67 | Sam Mauch | .4054 | 1985 | |
| 67 | Garrett Stewart | .4054 | 1994 | |
| 69 | Mike Martin | .4048 | 1983 | |
| 70 | Jorge Rea# | .4046 | 2013 | |
| 71 | Gerald Jordan | .4045 | 2004 | |
| 72 | Jesse Parker | .4041 | 1982 | |
| 73 | Félix Reynoso | .4038 | 1986 | |
| 74 | Vincente Durango | .4034 | 1987 | |
| 75 | Jim Nelson | .4026 | 1983 | |
| 76 | Jeff Hicks* | .4025 | 1991 | |
| 77 | Pedro Velázquez | .4024 | 1989 | |
| 78 | Jeremy Thomas | .4021 | 1984 | |
| 79 | Orlando González | .4019 | 1991 | |
| 80 | Robert Huot | .4017 | 1984 | |
| 81 | Steve Baker | .4015 | 1982 | |
| 81 | Ernest Miller | .4015 | 1977 | |
| 83 | Esteban Vera | .4012 | 2007 | |
| 84 | Enrique Martínez | .4007 | 1985 | |
| 85 | Juan Rodríguez | .4006 | 1982 | |
| 85 | António Rojas | .4006 | 1999 | |
| 87 | José Sandoval | .4004 | 1980 | |
| 88 | Travis Peters | .4003 | 1983 | |
| 89 | Bruce White | .4000 | 1972 | |
| 90 | Jesús Rodríguez# | .3997 | 2022 | |
| 90 | Tommy Messinger# | .3997 | 2020 | |
| 92 | Jon Stanford | .3993 | 1979 | |
| 92 | Tony Smith# | .3993 | 2018 | |
| 92 | John Peters | .3993 | 1996 | |
| 95 | Pedro Urbina | .3992 | 2003 | |
| 96 | Gabriel Morán | .3990 | 1995 | |
| 97 | Lawrence Townsley | .3985 | 2012 | |
| 98 | Rich Robertson | .3984 | 1994 | |
| 98 | Mick Caffyn | .3984 | 1980 | |
| 100 | Germán Ortíz | .3982 | 1979 |
