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| Progressive OSLG 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
Bold - Indicates active player |
| Year | Career | OSLG | Single-Season | OSLG | Active | OSLG | Yearly | OSLG |
| 1952 | Justin Paige | .3029 | Justin Paige | .3029 | ||||
| 1953 | Justin Paige | .3029 | Harry Robin | .3343 | ||||
| 1954 | Michael Knepper | .3643 | Justin Paige | .3029 | Michael Knepper | .3643 | Michael Jackson | .3473 |
| 1955 | Harry Robin | .3422 | John Alton | .3028 | Harry Robin | .3422 | John Alton | .3028 |
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