The 2004 American League Championship Series (ALCS) was a best-of-seven playoff series between the Boston Red Sox and the New York Yankees. The series is notable for the Red Sox's historic comeback after being down three games to none, ultimately winning four straight games to clinch the pennant. This victory marked the first time in Major League Baseball history that a team overcame a 3-0 deficit in a postseason series. The Red Sox went on to win the World Series, ending an 86-year championship drought known as the "Curse of the Bambino."