 The rivalry is often a heated subject of conversation, especially in the home region of both teams, the Northeastern United States. Until the 2014 season, every season's postseason had featured one or both of the AL East rivals since the inception of the wild card format and the resultant additional Division Series; they have faced each other in the AL Championship Series three times. The Yankees won twice, in 1999 and 2003; while the Red Sox won in 2004. In addition, the teams have twice met in the last regular-season series of a season to decide the league title, in 1904 (when the Red Sox won) and 1949 (when the Yankees won).
