The Boston Red Sox, based in Boston, Mass., participate in Major League Baseball (MLB) and are a member of the American League East Division. The Red Sox were founded as the Boston Somersets in 1901, then became the Boston Pilgrims in 1903 and finally the Boston Red Sox in 1907. Since 1912, the Red Sox have played home games at Fenway Park. The club has seven World Series Championships (1903, 1912, 1915, 1916, 1918, 2004, 2007).
