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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | SLG | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Zak Wilson# | .5489 | 1979-1991 | |
| 2 | Carlos Román | .5250 | 1955-1966 | |
| 3 | Ed Smith# | .5091 | 1984-1991 | |
| 4 | Mike Anderson | .5076 | 1968-1983 | |
| 5 | Hadde Ippel | .4955 | 1958-1976 | |
| 6 | Tim Hill | .4821 | 1950-1960 | |
| 7 | Colby Greene* | .4770 | 1911-1926 | |
| 8 | José Andrade | .4729 | 1952-1961 | |
| 9 | Cahern Walcker | .4625 | 1970-1984 | |
| 10 | Loy Fasciano | .4614 | 1923-1931 | |
| 11 | Jorge Félix | .4578 | 1971-1980 | |
| 12 | Will Fullerton | .4510 | 1924-1937 | |
| 13 | Mitch Davenport# | .4445 | 1979-1988 | |
| 14 | Herb Jackson* | .4436 | 1911-1927 | |
| 15 | Ernesto Pagán | .4374 | 1977-1989 | |
| 16 | Eugene Henderson | .4361 | 1968-1974 | |
| 17 | Mike Rúbio | .4322 | 1955-1967 | |
| 18 | Wen-hua Lundgren | .4319 | 1941-1952 | |
| 19 | Pepe Fuentes* | .4290 | 1922-1941 | |
| 20 | Roberto Chávez | .4282 | 1968-1984 | |
| 21 | Harry Bent | .4276 | 1939-1953 | |
| 22 | Krink Medlin | .4244 | 1937-1953 | |
| 23 | Albert Vincent | .4196 | 1970-1978 | |
| 24 | Raúl Escobar | .4154 | 1961-1974 | |
| 25 | Edward Cruz# | .4139 | 1976-1990 | |
| 26 | Masruq bin Dawud | .4133 | 1974-1982 | |
| 27 | Billy Chuter* | .4043 | 1915-1935 | |
| 28 | Manuel Gonzáles | .4025 | 1943-1949 | |
| 29 | Scotty Ash# | .3999 | 1980-1991 | |
| 29 | Knud Middelkoop | .3999 | 1924-1934 | |
| 31 | Daniel Peña | .3779 | 1973-1982 | |
| 32 | John Davis | .3705 | 1927-1933 | |
| 33 | Emílio Rivera | .3698 | 1933-1947 | |
| 34 | Alfredo Bulat | .3680 | 1953-1969 | |
| 35 | Carlos Martínez | .3662 | 1936-1951 | |
| 36 | Derek Dupree | .3600 | 1915-1926 | |
| 37 | Jorge Rodríguez | .3563 | 1919-1928 | |
| 38 | Mauro Rodríguez# | .3288 | 1983-1990 |
