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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | SLG | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Stephen Langdon* | .5213 | 1948-1960 | |
| 2 | Fernando Hernández | .5069 | 1937-1953 | |
| 3 | Wallace MacDormond | .4739 | 1959-1968 | |
| 4 | Bernard Perrin* | .4730 | 1938-1953 | |
| 5 | Yoelbi Fresneda* | .4688 | 1934-1951 | |
| 6 | Tony Walter | .4607 | 1932-1946 | |
| 7 | Edgardo Sandoval | .4511 | 1978-1985 | |
| 8 | Derrick Davis | .4474 | 1932-1945 | |
| 9 | Jesús Martínez | .4279 | 1958-1964 | |
| 10 | Javier Canó | .4228 | 1950-1958 | |
| 11 | Remke Wolthaus | .4171 | 1966-1974 | |
| 12 | Tatu Hakkila# | .4125 | 1981-1986 | |
| 13 | Jack McCoy# | .4113 | 1982-1989 | |
| 14 | Daniel Granier | .4042 | 1952-1961 | |
| 15 | Carlos Rodríguez | .3956 | 1981-1986 | |
| 16 | Peter Deakin | .3923 | 1979-1987 | |
| 17 | Brennan Harris | .3802 | 1973-1979 | |
| 18 | Harry Shortall | .3694 | 1935-1948 | |
| 19 | Jordan MacFeat# | .3644 | 1979-1990 | |
| 20 | Blaz Ruchendorf | .3584 | 1960-1973 | |
| 21 | David Ray | .3213 | 1973-1981 |
