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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Iestyn Drewry* | .4633 | 1951 | |
| 2 | Iestyn Drewry* | .4627 | 1952 | |
| 3 | Iestyn Drewry* | .4603 | 1954 | |
| 4 | Raúl García | .4548 | 1951 | |
| 5 | Aidan MacQuilly | .4527 | 1944 | |
| 6 | Kai Bignold | .4522 | 1951 | |
| 7 | Iestyn Drewry* | .4511 | 1953 | |
| 8 | Cooper Humphrey | .4502 | 1984 | |
| 9 | Kai Bignold | .4482 | 1941 | |
| 10 | Valentín Franco | .4478 | 1978 | |
| 11 | Jorge Martínez | .4444 | 1939 | |
| 12 | Chong-sik Kim | .4361 | 1978 | |
| 13 | Chong-sik Kim | .4356 | 1977 | |
| 14 | Gareth Tolley* | .4298 | 1936 | |
| 15 | Gareth Tolley* | .4277 | 1937 | |
| 16 | Lyonya Agapotchkin | .4267 | 1976 | |
| 17 | Nicolas Muller | .4234 | 1946 | |
| 18 | Aidan MacQuilly | .4232 | 1945 | |
| 19 | Carlos González# | .4231 | 1989 | |
| 20 | Stephen Kirbishly | .4206 | 1938 | |
| 21 | Will Logan# | .4194 | 1985 | |
| 22 | Lucas Gudereit | .4192 | 1961 | |
| 23 | Kai Bignold | .4187 | 1952 | |
| 24 | Bob Webb | .4172 | 1954 | |
| 25 | Craig Brady | .4160 | 1936 | |
| 26 | Jeff Dixon | .4140 | 1944 | |
| 27 | Jorge Muńóz | .4136 | 1941 | |
| 28 | Elza Aparecida | .4126 | 1957 | |
| 29 | Eric Tippett | .4122 | 1954 | |
| 30 | Joe Morgan | .4094 | 1969 | |
| 31 | Jorge Muńóz | .4082 | 1940 | |
| 32 | Lyonya Agapotchkin | .4073 | 1975 | |
| 33 | Tony Berroa | .4061 | 1946 | |
| 34 | Irfan Luqman# | .4056 | 1985 | |
| 35 | Phil Dundee | .4055 | 1958 | |
| 36 | Franz Frankfurter | .4052 | 1941 | |
| 37 | Jorge Muńóz | .4042 | 1936 | |
| 38 | Alejandro Muńóz | .4032 | 1983 | |
| 39 | Jesús Gómez | .4031 | 1954 | |
| 40 | Pierluigi Delmonico | .4013 | 1961 | |
| 41 | Iestyn Drewry* | .4012 | 1949 | |
| 42 | Jorge Muńóz | .4006 | 1939 | |
| 43 | Adam Anthony* | .3993 | 1934 | |
| 44 | Tom Huerta | .3988 | 1958 | |
| 45 | Stephen Kirbishly | .3987 | 1943 | |
| 46 | Arturo Vega | .3986 | 1974 | |
| 47 | Fita Onkwani# | .3972 | 1989 | |
| 48 | Jeff Dixon | .3964 | 1941 | |
| 49 | Mike Williams | .3960 | 1984 | |
| 50 | António Ortíz | .3959 | 1961 | |
| 51 | Adam Brinklow | .3951 | 1947 | |
| 52 | Elza Aparecida | .3940 | 1956 | |
| 53 | Jeff Dixon | .3926 | 1940 | |
| 54 | Jaime Guzmán | .3924 | 1962 | |
| 55 | Garry Newton | .3915 | 1948 | |
| 56 | Mu'ammar Zahor# | .3903 | 1989 | |
| 57 | Cooper Humphrey | .3892 | 1985 | |
| 58 | Ramón Medina | .3881 | 1956 | |
| 59 | Tony Berroa | .3879 | 1944 | |
| 60 | Stephen Mobley | .3861 | 1961 | |
| 61 | Arturo Vega | .3856 | 1975 | |
| 62 | Alberto Moreno | .3852 | 1947 | |
| 63 | Lucas Gudereit | .3851 | 1965 | |
| 64 | Jaime Guzmán | .3843 | 1960 | |
| 65 | Irfan Luqman# | .3839 | 1987 | |
| 66 | Karel Manshert | .3825 | 1937 | |
| 67 | Sebastian Dumbrill | .3817 | 1942 | |
| 68 | Mu'ammar Zahor# | .3814 | 1988 | |
| 69 | Colm Gallie# | .3806 | 1986 | |
| 69 | Terrence O'Quinn | .3806 | 1937 | |
| 71 | Bartolo Rosado | .3780 | 1967 | |
| 71 | Valentín Valdéz# | .3780 | 1990 | |
| 73 | Irfan Luqman# | .3772 | 1988 | |
| 74 | Alfredo Hernández | .3766 | 1987 | |
| 75 | Lukas Dopfer | .3763 | 1969 | |
| 76 | Mu'ammar Zahor# | .3761 | 1990 | |
| 77 | Rajeev Nandedkar | .3759 | 1980 | |
| 78 | Marcos Magana | .3758 | 1953 | |
| 79 | Colm Gallie# | .3750 | 1985 | |
| 80 | Sebastian Dumbrill | .3746 | 1944 | |
| 80 | Jeffery Osborne | .3746 | 1935 | |
| 82 | Bartolo Rosado | .3735 | 1968 | |
| 83 | Ryan Murchie | .3733 | 1981 | |
| 84 | Manuel Figueroa | .3721 | 1982 | |
| 85 | Indrapramati Haryadi | .3719 | 1961 | |
| 86 | Roland Bonnot | .3715 | 1975 | |
| 87 | Craig Sanford | .3713 | 1958 | |
| 88 | Franz Frankfurter | .3707 | 1945 | |
| 89 | Zahir Abdul-Nasir | .3706 | 1978 | |
| 90 | Wilbart Krugman | .3701 | 1980 | |
| 91 | Bob Webb | .3691 | 1953 | |
| 92 | Eric Tippett | .3690 | 1956 | |
| 93 | Lou Allan | .3688 | 1982 | |
| 94 | Kai Bignold | .3682 | 1950 | |
| 95 | Irfan Luqman# | .3680 | 1990 | |
| 96 | Isa Umar | .3678 | 1974 | |
| 97 | Dave Brown | .3674 | 1983 | |
| 97 | Bill Erlam | .3674 | 1979 | |
| 99 | Jamie Wilder | .3673 | 1956 | |
| 100 | Johnny De La Rosa | .3670 | 1939 |
