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In page Leon Day:

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Following his departure from the Negro leagues in 1950, Day spent a season with the semi-professional Winnipeg Buffalos of the Mandak League.[3] Finally, in 1951 Day made his debut in organized baseball, albeit in the minors, with the Toronto Maple Leafs, a Triple-A club where Day tallied a 1–1 record with a 1.58 ERA through 14 games. Lastly, Day also played for two other Class-A teams in the St. Louis Browns farm system, the Scranton Miners and the Edmonton Eskimos, before retiring from professional baseball in 1955 at age 39.[2]