Boston Red Sox def. New York Yankees – 2004 ALCS:
This comeback will forever reign in the history of the MLB. Without a title in 86 years, the Red Sox’ hopes were high in the 2004 playoffs. But they promptly fell behind three games to none in the American League Championship Series (ALCS) to their AL East and heated rivals, the New York Yankees.
Boston didn’t give up, taking the next four games in one of the most unbelievable comebacks in sports history. Other (albeit few) teams had come from three-game deficits to win seven-game series, but the Red Sox’ win was more important. They snapped their long cold streak by beating the Cardinals to win the World Series.