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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Ted Williams* | .4805 | 1939-1960 | |
| 2 | Billy Hamilton* | .4599 | 1890-1895 | |
| 3 | Phil Clark# | .4518 | 2057-2065 | |
| 4 | Joseph Lang* | .4420 | 2007-2020 | |
| 5 | Lance Thomas* | .4357 | 2043-2062 | |
| 6 | Barry Bonds* | .4322 | 1986-2004 | |
| 7 | Russell Ness* | .4320 | 2011-2027 | |
| 8 | Ty Cobb* | .4300 | 1905-1926 | |
| 9 | Wade Boggs | .4298 | 1982-1992 | |
| 10 | Joe Pierson* | .4268 | 2043-2059 | |
| 10 | Tris Speaker* | .4268 | 1907-1926 | |
| 12 | Fernando Morán# | .4250 | 2058-2066 | |
| 13 | Jimmie Foxx* | .4239 | 1936-1945 | |
| 14 | Rogers Hornsby* | .4235 | 1915-1933 | |
| 15 | Dave Moore# | .4231 | 2051-2066 | |
| 16 | Frank Thomas | .4197 | 1990-2005 | |
| 17 | Lou Warren# | .4187 | 2051-2066 | |
| 18 | Ángel Martínez# | .4165 | 2048-2066 | |
| 19 | Akihiko Kimura# | .4162 | 2056-2066 | |
| 20 | Edgar Martinez | .4161 | 1987-2004 | |
| 21 | Stan Musial* | .4160 | 1941-1963 | |
| 22 | Johnny Mize | .4152 | 1936-1941 | |
| 23 | Jim Robinson# | .4150 | 2057-2066 | |
| 24 | Myron Hillhouse | .4141 | 2008-2027 | |
| 25 | Wilson Murphy | .4138 | 2044-2064 | |
| 26 | John Lowe# | .4122 | 2058-2066 | |
| 27 | Parker Tucker | .4120 | 2045-2059 | |
| 27 | Todd Helton* | .4120 | 1997-2012 | |
| 29 | Arky Vaughan* | .4113 | 1932-1941 | |
| 30 | Hank Greenberg* | .4103 | 1930-1947 | |
| 31 | Armando Meléndez# | .4101 | 2058-2066 | |
| 32 | Jim Thome | .4095 | 1991-2006 | |
| 33 | Hojirou Orinosuke* | .4089 | 2007-2023 | |
| 34 | Lorenzo Ávila# | .4086 | 2061-2066 | |
| 35 | José Encarnación# | .4082 | 2049-2066 | |
| 36 | Ron Jones# | .4080 | 2056-2066 | |
| 37 | Luis Delgado# | .4075 | 2059-2066 | |
| 37 | Keith Smith | .4075 | 2007-2023 | |
| 39 | Donald Marks# | .4074 | 2062-2066 | |
| 40 | Robert Alejandro* | .4072 | 2008-2026 | |
| 41 | Robbie Rockwell# | .4071 | 2059-2066 | |
| 42 | Harry Heilmann* | .4068 | 1914-1932 | |
| 43 | Brian Giles | .4067 | 1995-2007 | |
| 43 | Jason Giambi | .4067 | 1995-2009 | |
| 45 | Jesus Criado* | .4066 | 2022-2037 | |
| 46 | Stanton Downer* | .4061 | 2017-2040 | |
| 47 | Jack Mowrer* | .4057 | 2019-2036 | |
| 48 | Bob Fields* | .4054 | 2035-2056 | |
| 49 | Paul Waner* | .4045 | 1926-1940 | |
| 50 | Larry Walker | .4044 | 1995-2005 | |
| 51 | Willard Noone* | .4041 | 2005-2022 | |
| 52 | Juan Díaz# | .4030 | 2056-2065 | |
| 52 | John Moshier | .4030 | 2011-2027 | |
| 54 | Chipper Jones | .4028 | 1993-2010 | |
| 55 | Gary Sheffield | .4025 | 1992-2007 | |
| 56 | Ed Delahanty* | .4021 | 1888-1901 | |
| 57 | Alfonso Moreno# | .4019 | 2060-2066 | |
| 58 | António Sánchez# | .4014 | 2053-2066 | |
| 59 | Rich Parkinson# | .4013 | 2055-2066 | |
| 60 | Manuel Aguilera | .4011 | 2049-2064 | |
| 60 | Miguel Padua* | .4011 | 2014-2030 | |
| 62 | Bobby Abreu | .4009 | 1996-2010 | |
| 63 | Charlie Gehringer* | .4007 | 1924-1942 | |
| 64 | Ralph Kiner* | .4003 | 1946-1955 | |
| 65 | Ken Gilbert# | .4002 | 2054-2066 | |
| 66 | Ramon Vilardebo* | .3997 | 2012-2035 | |
| 67 | Kenny Simon# | .3995 | 2049-2065 | |
| 68 | John Olerud | .3989 | 1989-2005 | |
| 69 | Rickey Henderson | .3988 | 1979-2003 | |
| 70 | Martino Sciorra* | .3987 | 2032-2052 | |
| 71 | Garry Payson* | .3985 | 2019-2038 | |
| 72 | Lance Berkman | .3978 | 1999-2013 | |
| 73 | Dave Hall# | .3976 | 2057-2066 | |
| 74 | Dan Williams# | .3975 | 2054-2066 | |
| 75 | William Wolfgram* | .3974 | 2020-2038 | |
| 76 | Dennis Renfrow* | .3970 | 2014-2032 | |
| 77 | Bob Arthur* | .3969 | 2036-2052 | |
| 78 | Bernardo Díaz* | .3967 | 2038-2055 | |
| 79 | Richard Allison# | .3966 | 2060-2066 | |
| 80 | Thomas Benson | .3964 | 2026-2032 | |
| 81 | Dave Miller# | .3963 | 2057-2066 | |
| 82 | David Wasson* | .3959 | 2019-2033 | |
| 83 | Gary Walker | .3956 | 2008-2022 | |
| 84 | Armando Fernández* | .3949 | 2037-2054 | |
| 85 | George Murphy# | .3947 | 2058-2066 | |
| 86 | Tracy Rojas* | .3946 | 2007-2020 | |
| 86 | Ron Bennett# | .3946 | 2050-2066 | |
| 88 | Francis Otwell | .3945 | 2009-2023 | |
| 89 | Manny Ramirez* | .3944 | 1993-2012 | |
| 90 | Ira Hubler* | .3940 | 2010-2023 | |
| 90 | Rod Carew* | .3940 | 1967-1978 | |
| 92 | Joe Morgan* | .3936 | 1963-1984 | |
| 92 | Jason Bay | .3936 | 2003-2015 | |
| 92 | Júlio Mejía# | .3936 | 2060-2066 | |
| 95 | Edmund Harris* | .3932 | 2037-2055 | |
| 96 | Jorge Deleon | .3926 | 2012-2025 | |
| 97 | Earl Averill* | .3925 | 1929-1940 | |
| 98 | Salvador Martínez# | .3924 | 2059-2066 | |
| 99 | Mark McGwire* | .3922 | 1986-2001 | |
| 100 | Ron McCoy | .3921 | 2048-2062 |
