1948 Major League Baseball season
During the 1948 Major League Baseball season, the Boston Braves won the NL pennant and the Cleveland Indians won a 1-game playoff against the Boston Red Sox to take the AL pennant.
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Wikipedia
During the 1948 Major League Baseball season, the Boston Braves won the NL pennant and the Cleveland Indians won a 1-game playoff against the Boston Red Sox to take the AL pennant.