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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Mickey Cochrane* | .4591 | 1933 | |
| 2 | Mickey Cochrane* | .4521 | 1935 | |
| 3 | Joe Mauer | .4439 | 2009 | |
| 4 | Mike Piazza* | .4313 | 1997 | |
| 5 | Joe Mauer | .4293 | 2006 | |
| 6 | Wally Schang | .4280 | 1921 | |
| 7 | Mickey Cochrane* | .4277 | 1934 | |
| 8 | Dick Dietz | .4262 | 1970 | |
| 9 | Jorge Posada | .4261 | 2007 | |
| 10 | Mickey Cochrane* | .4236 | 1930 | |
| 11 | Mickey Cochrane* | .4228 | 1931 | |
| 12 | Mike Piazza* | .4216 | 1996 | |
| 13 | Darrell Porter | .4207 | 1979 | |
| 14 | Nicolau Porcelos | .4206 | 2033 | |
| 15 | Roger Bresnahan* | .4192 | 1906 | |
| 16 | Mickey Tettleton | .4189 | 1994 | |
| 17 | Brian Downing | .4182 | 1979 | |
| 18 | Bill Dickey* | .4168 | 1937 | |
| 19 | Jorge Posada | .4167 | 2000 | |
| 20 | Rudy York | .4165 | 1938 | |
| 21 | Chris Hoiles | .4160 | 1993 | |
| 22 | Joe Mauer | .4156 | 2012 | |
| 23 | Nicolau Porcelos | .4155 | 2041 | |
| 24 | Gene Tenace | .4145 | 1977 | |
| 25 | Joe Mauer | .4130 | 2008 | |
| 26 | Bill Dickey* | .4124 | 1938 | |
| 27 | Jason Kendall | .4121 | 2000 | |
| 28 | Mickey Cochrane* | .4120 | 1929 | |
| 29 | Mickey Cochrane* | .4116 | 1932 | |
| 30 | Jason Kendall | .4112 | 1998 | |
| 31 | Mickey Cochrane* | .4091 | 1927 | |
| 32 | Steve O'Neill | .4082 | 1920 | |
| 32 | Buster Posey* | .4082 | 2012 | |
| 34 | Mike Gordon* | .4079 | 2033 | |
| 35 | Bob O'Farrell | .4077 | 1923 | |
| 35 | Ted Simmons | .4077 | 1977 | |
| 37 | Mike Scioscia | .4066 | 1985 | |
| 37 | Travis Hodge | .4066 | 2066 | |
| 39 | Rick Ferrell* | .4059 | 1932 | |
| 40 | Adam Akin | .4054 | 2067 | |
| 41 | Jorge Posada | .4048 | 2003 | |
| 42 | Mike Gordon* | .4047 | 2036 | |
| 42 | Wally Schang | .4047 | 1922 | |
| 44 | Gabby Hartnett* | .4043 | 1930 | |
| 44 | Mike Gordon* | .4043 | 2034 | |
| 44 | Miguel Cabrera | .4043 | 2076 | |
| 47 | Jordan Hand | .4040 | 2021 | |
| 48 | Adam Akin | .4036 | 2074 | |
| 49 | Joe Mauer | .4035 | 2013 | |
| 50 | Klondike Douglass | .4034 | 1897 | |
| 51 | Buster Posey* | .4033 | 2017 | |
| 52 | Muddy Ruel | .4032 | 1927 | |
| 53 | Bill Dickey* | .4029 | 1939 | |
| 54 | Gene Tenace | .4028 | 1979 | |
| 55 | Joe Mauer | .4024 | 2010 | |
| 56 | Carlton Fisk* | .4016 | 1977 | |
| 57 | Roger Bresnahan* | .4015 | 1908 | |
| 58 | Adam Akin | .4014 | 2069 | |
| 59 | Rick Ferrell* | .4012 | 1938 | |
| 60 | Adam Bollman* | .4011 | 2037 | |
| 61 | Mike Gordon* | .4007 | 2030 | |
| 62 | Jorge Posada | .4004 | 2004 | |
| 63 | Mike Piazza* | .4000 | 1995 | |
| 64 | Jason Kendall | .3991 | 2003 | |
| 65 | Jason Kendall | .3988 | 2004 | |
| 66 | Jerry Peterson# | .3985 | 2094 | |
| 67 | Mike Piazza* | .3982 | 2000 | |
| 68 | Joe Torre* | .3977 | 1970 | |
| 69 | Scott Jimenez | .3972 | 2041 | |
| 70 | Adam Akin | .3964 | 2070 | |
| 71 | Zach Jackson | .3962 | 2021 | |
| 72 | Ted Simmons | .3960 | 1975 | |
| 73 | Gene Tenace | .3952 | 1975 | |
| 74 | Roy Campanella* | .3949 | 1953 | |
| 74 | Mickey Cochrane* | .3949 | 1928 | |
| 76 | Spud Davis | .3947 | 1933 | |
| 77 | Roy Campanella* | .3946 | 1955 | |
| 78 | Muddy Ruel | .3945 | 1923 | |
| 79 | Buster Posey* | .3939 | 2016 | |
| 80 | Todd Hundley | .3937 | 1997 | |
| 81 | Vince Heard | .3935 | 2028 | |
| 82 | Roy Campanella* | .3932 | 1951 | |
| 82 | Adam Akin | .3932 | 2073 | |
| 84 | Mike Gordon* | .3929 | 2028 | |
| 85 | Darren Daulton | .3925 | 1993 | |
| 86 | Steven Williams* | .3913 | 2032 | |
| 86 | Ernie Lombardi* | .3913 | 1938 | |
| 88 | Victor Martinez | .3911 | 2006 | |
| 89 | Miguel Montero | .3909 | 2012 | |
| 90 | Manny Sanguillen | .3907 | 1975 | |
| 91 | Jason Kendall | .3905 | 1997 | |
| 92 | Carlos Ovies | .3904 | 2035 | |
| 93 | Mike Gordon* | .3902 | 2037 | |
| 94 | Jason Varitek | .3899 | 2004 | |
| 95 | Mike Piazza* | .3898 | 1998 | |
| 96 | Rick Ferrell* | .3897 | 1934 | |
| 97 | Mike Gordon* | .3891 | 2032 | |
| 98 | Jerry Peterson# | .3890 | 2093 | |
| 98 | Frankie Hayes | .3890 | 1940 | |
| 100 | Alex Avila | .3887 | 2011 |
