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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | SLG | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Tristan Mallenbrandt | .5479 | 1950-1961 | |
| 2 | Pjotr Blok | .5215 | 1930-1942 | |
| 3 | Jamel Bouvet | .4955 | 1955-1970 | |
| 4 | Adam Anthony* | .4945 | 1918-1929 | |
| 5 | Ellis Burrell | .4827 | 1927-1938 | |
| 6 | Maxim Dashkevich# | .4725 | 1980-1990 | |
| 7 | Kelvin van Gorp* | .4722 | 1930-1945 | |
| 8 | Kien Si | .4598 | 1927-1933 | |
| 9 | Almas bin Da'ud# | .4491 | 1980-1990 | |
| 10 | Kian Lenn | .4354 | 1923-1928 | |
| 11 | Tim Bamber | .4326 | 1972-1984 | |
| 12 | Zale Panayiotopoulos# | .4217 | 1981-1989 | |
| 13 | Wayne Cramphorn | .4172 | 1920-1936 | |
| 14 | Woodrow Lawton | .4168 | 1947-1956 | |
| 15 | Matthew Routley | .4166 | 1921-1935 | |
| 16 | Lionel Dumoulin | .4149 | 1933-1943 | |
| 17 | Juan De Jesús | .4093 | 1948-1959 | |
| 18 | Nathan MacCrum | .4058 | 1922-1936 | |
| 19 | Héctor López | .4041 | 1958-1978 | |
| 20 | Damien Fenner | .3944 | 1911-1919 | |
| 21 | Lau-po Yu | .3806 | 1916-1922 | |
| 22 | Ángel Cisneros | .3754 | 1944-1957 | |
| 23 | Carlos López# | .3698 | 1979-1989 | |
| 24 | Jean-Louis Bellet | .3640 | 1913-1922 | |
| 25 | Mario Verbiest# | .3633 | 1977-1990 |
