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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | SLG | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Shigemasa Sato* | .6443 | 1930 | |
| 2 | Shigemasa Sato* | .6073 | 1936 | |
| 3 | Callum Bourke | .6012 | 1963 | |
| 4 | Zak Wilson# | .5996 | 1982 | |
| 5 | Callum Bourke | .5784 | 1961 | |
| 6 | Shigemasa Sato* | .5761 | 1940 | |
| 7 | Callum Bourke | .5726 | 1962 | |
| 8 | Carlos Helásquez | .5706 | 1971 | |
| 9 | Rafael Martínez* | .5646 | 1932 | |
| 10 | Rafael Martínez* | .5622 | 1935 | |
| 11 | Carlos Helásquez | .5618 | 1970 | |
| 12 | Raúl Francisco | .5607 | 1924 | |
| 13 | Carlos Román | .5599 | 1955 | |
| 14 | Shigemasa Sato* | .5556 | 1939 | |
| 15 | Alfredo Guzmán | .5501 | 1958 | |
| 16 | Diego Barrios# | .5492 | 1989 | |
| 17 | Rafael Martínez* | .5489 | 1936 | |
| 18 | Diego Barrios# | .5485 | 1986 | |
| 19 | Herb Jackson* | .5428 | 1913 | |
| 20 | Rafael Martínez* | .5411 | 1934 | |
| 21 | Shigemasa Sato* | .5348 | 1935 | |
| 22 | Zak Wilson# | .5329 | 1983 | |
| 23 | Carlos Helásquez | .5314 | 1964 | |
| 24 | Carlos Helásquez | .5302 | 1973 | |
| 25 | Herb Jackson* | .5241 | 1916 | |
| 26 | Shigemasa Sato* | .5235 | 1937 | |
| 27 | Tony Daley | .5221 | 1963 | |
| 28 | Rafael Martínez* | .5190 | 1933 | |
| 29 | Cahern Walcker | .5172 | 1973 | |
| 30 | Elmer Young | .5159 | 1983 | |
| 31 | Charlie Moore | .5154 | 1912 | |
| 32 | Wop Ouwens# | .5057 | 1979 | |
| 33 | Edgardo Souza# | .5053 | 1988 | |
| 33 | Eiske Jiménez | .5053 | 1981 | |
| 35 | Almas bin Da'ud# | .5051 | 1987 | |
| 36 | Almas bin Da'ud# | .5049 | 1988 | |
| 37 | Luis Tirado | .5022 | 1926 | |
| 38 | Fred Roberts* | .5012 | 1929 | |
| 39 | John Douglas | .5000 | 1931 | |
| 39 | Carlos Helásquez | .5000 | 1965 | |
| 41 | Fred Roberts* | .4990 | 1925 | |
| 41 | Rafael Martínez* | .4990 | 1929 | |
| 41 | Karim Jean | .4990 | 1975 | |
| 44 | Rafael Martínez* | .4957 | 1927 | |
| 45 | Gerardo Macías# | .4953 | 1990 | |
| 46 | Carlos Helásquez | .4939 | 1969 | |
| 46 | José Bonilla | .4939 | 1934 | |
| 48 | Stan Joyce# | .4934 | 1990 | |
| 49 | Shigemasa Sato* | .4931 | 1938 | |
| 50 | Wop Ouwens# | .4902 | 1982 | |
| 51 | Shigemasa Sato* | .4897 | 1933 | |
| 51 | Carlos Helásquez | .4897 | 1966 | |
| 51 | Gavin MacNamara | .4897 | 1968 | |
| 54 | Valentín Franco | .4890 | 1979 | |
| 55 | Carlos Helásquez | .4883 | 1977 | |
| 56 | Jaime Ortega | .4871 | 1956 | |
| 57 | Roberto Chávez | .4866 | 1983 | |
| 57 | Juan Luis García | .4866 | 1957 | |
| 59 | Tinbits Blue | .4864 | 1921 | |
| 60 | Gavin MacNamara | .4848 | 1964 | |
| 61 | Vincente Dávila | .4843 | 1971 | |
| 62 | Herb Jackson* | .4841 | 1919 | |
| 63 | Shane Bradley | .4840 | 1930 | |
| 63 | Bill Collier* | .4840 | 1930 | |
| 65 | Rafael Martínez* | .4839 | 1928 | |
| 66 | Will Fullerton | .4828 | 1930 | |
| 67 | Kent Rodríguez | .4826 | 1947 | |
| 68 | Brian Smith | .4825 | 1962 | |
| 69 | Christian Cook# | .4816 | 1980 | |
| 70 | Germán Hernández | .4810 | 1958 | |
| 71 | Jason Henry | .4802 | 1974 | |
| 72 | Zak Wilson# | .4787 | 1990 | |
| 73 | Joe Garrett# | .4786 | 1987 | |
| 74 | Callum Bourke | .4778 | 1956 | |
| 75 | Diego Hernández | .4761 | 1929 | |
| 76 | Shane Bradley | .4756 | 1932 | |
| 77 | Callum Bourke | .4754 | 1964 | |
| 78 | Bill Collier* | .4750 | 1929 | |
| 79 | Shane Bradley | .4745 | 1928 | |
| 79 | Arturo Vega | .4745 | 1969 | |
| 81 | Jorge Durán | .4743 | 1915 | |
| 82 | Víctor Maldonado | .4736 | 1962 | |
| 83 | Bill Collier* | .4729 | 1932 | |
| 84 | Linwood Flores | .4725 | 1924 | |
| 85 | Lance Kaiser | .4721 | 1949 | |
| 85 | Will Fullerton | .4721 | 1925 | |
| 87 | Wayne Cramphorn | .4712 | 1929 | |
| 88 | Herb Jackson* | .4707 | 1917 | |
| 89 | Ricardo Ortíz | .4703 | 1964 | |
| 90 | Joe Wolfe | .4699 | 1938 | |
| 91 | Leon Gardner | .4691 | 1912 | |
| 92 | Al Ellis | .4688 | 1942 | |
| 93 | Almas bin Da'ud# | .4667 | 1989 | |
| 94 | Malcolm Paige | .4662 | 1968 | |
| 95 | Lance Kaiser | .4657 | 1950 | |
| 96 | Christian Cook# | .4653 | 1978 | |
| 97 | Ken McDonald | .4648 | 1913 | |
| 98 | Domingo Ramos | .4640 | 1924 | |
| 99 | Arthur Martínez | .4639 | 1950 | |
| 100 | Juan Carlos Rodríguez | .4635 | 1920 |
