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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | SLG | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Matt Wood | .7191 | 1950-1953 | |
| 2 | José Sandoval | .6672 | 1954-1957 | |
| 3 | Claudio Moreno | .6135 | 1948-1951 | |
| 4 | Javier Salazar | .6058 | 1950-1953 | |
| 5 | Mario Toro | .5919 | 1935-1938 | |
| 6 | Dave Hampton | .5891 | 1933-1936 | |
| 7 | George Barlow | .5751 | 1942-1945 | |
| 8 | Josh Thompson | .5735 | 1959-1962 | |
| 9 | Samuel Bramati | .5675 | 1934-1937 | |
| 10 | Lodewijk Hawley | .5646 | 1942-1945 | |
| 11 | Colin Wilkins | .5597 | 1954-1957 | |
| 12 | Joe Davis | .5455 | 1938-1941 | |
| 13 | Joe Martin | .5387 | 1942-1945 | |
| 14 | Mike Jacobs | .5149 | 1926-1929 | |
| 15 | Roberto Murillo | .5104 | 1933-1936 | |
| 16 | Vincent French | .4918 | 1934-1937 | |
| 17 | Robbie Moore | .4802 | 1934-1937 | |
| 18 | Carlos González | .4799 | 1959-1962 | |
| 19 | Ray Keating | .4742 | 1938-1941 | |
| 20 | Mark Wilson | .4731 | 1944-1947 | |
| 21 | Dave Taylor | .4680 | 1926-1929 | |
| 22 | Shawn Kuoppala | .4656 | 1953-1956 | |
| 23 | Jamie Jones | .4639 | 1938-1941 | |
| 24 | Nelson Davis | .4637 | 1962-1965 | |
| 25 | Hugh Davis | .4516 | 1937-1940 | |
| 26 | Jack Burns | .4497 | 1967-1971 | |
| 27 | Mario Hernández# | .4149 | 1983-1986 | |
| 28 | Steven Martin | .4118 | 1968-1972 | |
| 29 | Louie Hood | .4006 | 1934-1937 | |
| 30 | Bruce Battle# | .3705 | 1988-1991 |
