1915-1920 - The tournaments are held at West Side Tennis Club in Forest Hills, New York.
1968 - The 'open era' starts. Professionals are allowed to compete with amateurs. Name changes to the U.S. Open. Arthur Ashe is the first winner of the newly named tournament.
1973 - The U.S. Open becomes the first Grand Slam tournament to offer equal prize money to male and female winners.
1978 - The National Tennis Center at Flushing Meadows Corona Park becomes the site of the U.S. Open.
1997 - The stadium used for the tournament inside the USTA National Tennis Center is named Arthur Ashe Stadium.
2006 - The USTA National Tennis Center facility, home of the U.S. Open, is renamed the USTA Billie Jean King National Tennis Center.