Babe Ruth first sixteen World Series, those played between 1903 and 1919, would not win another pennant until 1946, or another World Series until 2004, a drought attributed in baseball superstition to Frazee's sale of Ruth and sometimes dubbed the "Curse of the Bambino". The Yankees, on the other hand, had not won the AL championship prior to their acquisition of Ruth. They won seven AL pennants and four World Series with Ruth, and lead baseball with 40 pennants and 27 World Series titles in their history. When Ruth signed with the Yankees, he completed his transition from a pitcher to a
Major League Baseball Union Association (1884), the Players' League (1890), and the Federal League (1914–1915). Both the UA and AA are considered major leagues by many baseball researchers because of the perceived high caliber of play and the number of star players featured. Some researchers, including Nate Silver, dispute the major-league status of the UA by pointing out that franchises came and went and that the St. Louis club was deliberately "stacked"; the St. Louis club was owned by the league's president and it was the only club that was close to major-league caliber. The period between 1900 and 1919 is commonly referred