The 2013 Major League Baseball postseason was the playoff tournament of Major League Baseball for the 2013 season. The winners of the League Division Series would move on to the League Championship Series to determine the pennant winners that face each other in the World Series. The postseason began on October 1, 2013, and ended on October 30, 2013, with the Red Sox defeating the Cardinals in six games in the 2013 World Series. It was the eighth title for the Red Sox.