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| Progressive Slugging Pct Leaderboard | |
| This table is a snapshot of the career, single-season, active, and yearly leaders at the end of each season. | |
| * - Indicates Hall of Fame
+ - indicates hit-less at-bats added to meet 502PA requirement. Bold - Indicates active player |
| Year | Career | SLG | Single-Season | SLG | Active | SLG | Yearly | SLG |
| 1947 | Sean Hawk | .6686 | Sean Hawk | .6686 | ||||
| 1948 | Sean Hawk | .6912 | Sean Hawk | .6912 | ||||
| 1949 | Jimmie Davis | .7413 | Jimmie Davis | .7413 | ||||
| 1950 | Jimmie Davis | .7413 | Luis Caņaveral | .6055 | ||||
| For questions or to report errors, please send us a note. |