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Progressive ERA 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	ERA	Single-Season	ERA	Active	ERA	Yearly	ERA
1947			Stan Lugo	1.751			Stan Lugo	1.751
1948			Stan Lugo	1.215			Stan Lugo	1.215
1949			Stan Lugo	1.215			Stan Lugo	2.394
1950	Robert Lerman	3.140	Stan Lugo	1.215	Robert Lerman	3.140	Robert Lerman	2.489

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