While in the National League, the Astros held rivalries with the Braves and the St. Louis Cardinals, but since their transition to the American League, have come to hold divisional rivalries with the Seattle Mariners and Texas Rangers (known as the Lone Star Series), as well as a recurring postseason rivalry with the New York Yankees.
While in the National League, the Astros held rivalries with the Braves and the St. Louis Cardinals, but since their transition to the American League have come to hold divisional rivalries with the Seattle Mariners and Texas Rangers (known as the Lone Star Series), as well as a recurring postseason rivalry with the New York Yankees.