How many times have the New York Yankees won the World Series?

The 2004 American League Championship Series was a Major League Baseball playoff series played between the Boston Red Sox and the New York Yankees. The series, a rematch of the 2003 American League Championship Series, started on October 12, 2004 and ended one minute after midnight Eastern Time on October 21. The Red Sox, down three games to none and trailing by a run in the bottom of the ninth inning of Game 4, came back to win the series in seven games. They became the first team in professional sports history to win a seven-game postseason series after losing the first three games.