The Boston Red Sox The Boston Red Sox are a founding member of Major League Baseball's American League and one of four American League clubs (the others are the White Sox, Indians, and Tigers) that continue to play in their original city. They have won more World Series than any other American League team, including seven out of eight from 1912 to 1915 and again in 1918. Their last championship run ended with defeat by the Black Sox scandal-plagued Chicago White Sox. The first game of baseball's new season is played on April 6, 1871, at Fenway Park in Boston. The Red Stockings, as they were then known, beat the Buffalo Bisons 11-10 before a crowd of 3,000 people. The Red Stockings went on to win the National Association's first season but lost all three games of the 1872 World Championship Series against the National League's New York Metropolitans. Afterward, the National Association disbanded, and the Red Stockings joined the newly formed American Association for the following season. The Red Stockings finished second in the Association's first season behind the Baltimore Orioles and also defeated them in three games of the World Series. However, the Orioles went on to win the next two seasons as well, so the Red Stockings did not win another title until 1903. They remained in the American League until 1916 when they moved to Cleveland.