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| Portland Blue Sox | |
|---|---|
| |
| Minor league affiliations | |
| Previous classes | Class D (1907–1908, 1913) Independent (1897) |
Previous leagues | Maine State League (1897, 1907–1908) Atlantic Association (1908) New England League (1919) |
| Major league affiliations | |
| Previous teams | None |
| Minor league titles | |
| League titles | 1897 |
| Team data | |
Previous names | Portland (1897) Portland Blue Sox (1907–1908) Pine Tree Capers (1907–1908) Portland Blue Sox (1919) |
Previous parks | Back Cove Park |
The Portland Blue Sox were a class-D minor league baseball team in Portland, Maine which played from 1907 to 1908 in the Maine State League and the Atlantic Association before folding. The Blue Sox were relaunched in 1919 to make up for the loss of the Portland Duffs, which folded in 1917 and played in the Eastern League. The 1919 Blue Sox were added to the New England League, but only lasted one season.