The Boston Red Sox are professional baseball team based in the Boston , Massachusetts . The Red Sox was founded in 1893, as the Toledo , Ohio franchise in the minor Western League. The team shifted to Boston in the year 1900. The team in their inaugural session in 1901 made a score of 79-57. The Boston Red Sox won the first World Series in 1903 against the favored National League team, the Pittsburgh Pirates. Baseball legends Babe Ruth, Tris Speaker, and Cy Young helped Boston win six pennants and five World Series titles from 1903 to 1918. In 1919, the team's new owner, Harry Frazee, sold Ruth to the New York Yankees. In 1920 the Red Sox won 5 Championships, while the Yankees won none.Boston Red Sox Jerseys