The 2001 Major League Baseball season, the first of the 21st century, finished with the Arizona Diamondbacks defeating the New York Yankees in seven games, for the 2001 World Series. The September 11 terrorist attacks on New York and Washington, D.C. pushed the end of the regular-season from September 30 to October 7. Because of the tragedy, the World Series was not completed until November 4; therefore, it was called The November Series. The 2001 World Series was the first World Series to end in November since 1989. The 2009 Series, which was scheduled to end on November 1 at the earliest and ended on November 4.
This season was memorable for the Seattle Mariners equaling the Major League regular season record of 116 wins, Barry Bonds breaking Mark McGwire's single-season home run record, and baseball's patriotic return after a week's worth of games being postponed due to the 9/11 terrorist attacks.