The 1997 Major League Baseball postseason ran from September 30 to October 26, 1997, and was notably the last edition where teams were not seeded by their win-loss record. The American League featured the Yankees, Indians, Orioles, and Mariners, while the National League saw the Braves make their sixth straight appearance and the Florida Marlins make their first postseason appearance in just their fourth season. In the ALDS, the Orioles beat the Mariners 3-1 (a series win they wouldn't repeat until 2014), and the Indians upset the defending champion Yankees in a five-game thriller, highlighted by a dramatic Game 4 comeback. The postseason culminated with the Marlins defeating the Indians in seven games in the World Series, securing their first championship in franchise history. This matchup also ignited a fierce Yankees-Indians rivalry, as the two teams would meet in the postseason six more times over the following decades.