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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Frank Thomas* | .4522 | 1990-2008 | |
| 2 | Lou Gehrig* | .4474 | 1923-1939 | |
| 3 | Jimmie Foxx* | .4297 | 1925-1945 | |
| 4 | Ferris Fain | .4241 | 1947-1955 | |
| 5 | Todd Helton* | .4148 | 1997-2013 | |
| 6 | Rich Gonzales* | .4133 | 2042-2060 | |
| 7 | Stan Musial* | .4109 | 1941-1963 | |
| 8 | Hank Greenberg* | .4096 | 1930-1947 | |
| 9 | Jason Giambi | .4093 | 1995-2014 | |
| 10 | Jim Thome* | .4076 | 1991-2012 | |
| 10 | Joey Votto | .4076 | 2007-2024 | |
| 10 | Jeff Bagwell | .4076 | 1991-2005 | |
| 13 | Javier Serrato* | .4059 | 2023-2042 | |
| 14 | Roger Connor* | .4037 | 1883-1897 | |
| 15 | Lu Blue | .4022 | 1921-1933 | |
| 16 | Rod Carew* | .4021 | 1967-1985 | |
| 17 | Carl Yastrzemski* | .4012 | 1961-1983 | |
| 18 | John Kruk | .4005 | 1986-1995 | |
| 19 | Pedro Reyna | .3996 | 2030-2042 | |
| 19 | John Olerud | .3996 | 1989-2005 | |
| 21 | Pat Page* | .3994 | 2050-2065 | |
| 22 | Nick Johnson | .3992 | 2001-2012 | |
| 23 | Frank Chance* | .3984 | 1898-1914 | |
| 24 | Johnny Mize* | .3971 | 1936-1953 | |
| 25 | Cap Anson* | .3967 | 1876-1897 | |
| 25 | Lance Berkman | .3967 | 1999-2013 | |
| 27 | Mark McGwire | .3952 | 1986-2001 | |
| 28 | Mike Hargrove | .3951 | 1974-1985 | |
| 29 | Bill Terry* | .3927 | 1923-1936 | |
| 30 | Ben Thomas* | .3924 | 2067-2086 | |
| 31 | Jack Fournier | .3921 | 1912-1927 | |
| 32 | Miguel Cabrera* | .3907 | 2003-2024 | |
| 33 | Alvin Davis | .3897 | 1984-1992 | |
| 34 | Chris Gutierrez* | .3887 | 2023-2037 | |
| 35 | Carlos Delgado | .3883 | 1993-2009 | |
| 35 | Dolph Camilli | .3883 | 1933-1945 | |
| 37 | Peter Maris | .3879 | 2019-2029 | |
| 38 | Wayne Paris* | .3876 | 2070-2087 | |
| 39 | Prince Fielder* | .3864 | 2005-2024 | |
| 40 | Earl Torgeson | .3855 | 1947-1961 | |
| 41 | Sean Whitacre* | .3847 | 2067-2083 | |
| 42 | Chaney Rogers | .3845 | 2020-2028 | |
| 43 | Keith Hernandez | .3844 | 1974-1990 | |
| 43 | Brian Gonzales | .3844 | 2057-2069 | |
| 45 | Harmon Killebrew* | .3841 | 1954-1975 | |
| 46 | Elbie Fletcher | .3839 | 1934-1949 | |
| 47 | Will Clark | .3836 | 1986-2000 | |
| 48 | Jorge Barrera | .3833 | 2053-2071 | |
| 48 | Mark Grace | .3833 | 1988-2003 | |
| 50 | Carlos Carrillo | .3829 | 2077-2087 | |
| 50 | Earl Sheely | .3829 | 1921-1931 | |
| 52 | Mo Vaughn | .3827 | 1991-2003 | |
| 53 | David Ortiz* | .3807 | 1997-2018 | |
| 54 | Alex Heaberlin | .3806 | 2086-2095 | |
| 55 | Zeke Bonura | .3797 | 1934-1940 | |
| 56 | Chris Kleinman | .3795 | 2032-2046 | |
| 56 | Albert Pujols* | .3795 | 2001-2018 | |
| 58 | George Sisler* | .3792 | 1915-1930 | |
| 59 | Jim McDill | .3791 | 2032-2047 | |
| 60 | Ricky Vidal | .3788 | 2066-2080 | |
| 61 | Willie McCovey* | .3785 | 1959-1980 | |
| 62 | Juan Valentin* | .3780 | 2074-2089 | |
| 63 | Fred McGriff | .3779 | 1986-2004 | |
| 64 | Joe Judge | .3778 | 1915-1934 | |
| 65 | Jim Davis# | .3769 | 2093-2098 | |
| 66 | Dave Valdivia | .3756 | 2065-2080 | |
| 67 | Don Hurst | .3754 | 1928-1934 | |
| 68 | Ryan Klesko | .3747 | 1992-2007 | |
| 68 | Franklin Correa | .3747 | 2053-2067 | |
| 70 | Norm Cash | .3743 | 1958-1974 | |
| 71 | Norm Siebern | .3741 | 1956-1968 | |
| 72 | Blake Loomis* | .3739 | 2077-2091 | |
| 73 | Phil Cavarretta | .3731 | 1934-1955 | |
| 74 | Dick Allen | .3729 | 1963-1977 | |
| 75 | Nate Heger | .3720 | 2026-2041 | |
| 76 | Allen Barrowcliff | .3712 | 2064-2078 | |
| 77 | Paul Goldschmidt* | .3711 | 2011-2027 | |
| 78 | Rafael Palmeiro | .3709 | 1986-2005 | |
| 79 | Hal Trosky | .3708 | 1933-1946 | |
| 80 | Nick Etten | .3707 | 1938-1947 | |
| 81 | Ramon Lopez | .3701 | 2069-2090 | |
| 82 | Cody Knapp | .3694 | 2051-2062 | |
| 83 | Jim Bottomley* | .3693 | 1922-1937 | |
| 84 | Fred Tenney | .3690 | 1894-1911 | |
| 85 | Gus Suhr | .3682 | 1930-1940 | |
| 85 | Jim Gentile | .3682 | 1957-1966 | |
| 87 | Miguel Andujar* | .3674 | 2019-2034 | |
| 87 | Kurt Adams | .3674 | 2061-2074 | |
| 89 | Jose Vazquez | .3670 | 2051-2066 | |
| 90 | Kent Hrbek | .3669 | 1981-1994 | |
| 91 | Efrain Velez | .3668 | 2085-2094 | |
| 91 | Sean Casey | .3668 | 1997-2008 | |
| 93 | Jose Camacho# | .3666 | 2087-2098 | |
| 94 | Eddie Murray* | .3664 | 1977-1997 | |
| 94 | Ron Fairly | .3664 | 1958-1978 | |
| 96 | Hector Velazquez | .3663 | 2051-2068 | |
| 97 | Santiago Bernabe | .3662 | 2055-2071 | |
| 98 | Sam Hicks | .3661 | 2037-2051 | |
| 99 | Jason Thompson | .3658 | 1976-1986 | |
| 100 | Chris Hagen | .3657 | 2046-2056 |
