On this day in US Open History - Sept. 9

1956: Ken Rosewall defeats Lew Hoad, 4-6, 6-2, 6-3, 6-3, o win his first U.S. Men's Singles title.

1968: Arthur Ashe wins the first US Open of the Open Era, defeating Tom Okker in the final, 14-12, 5-7, 6-3, 3-6, 6-3. Ashe is the first African-American male to win a Grand Slam tournament.

1974: Twenty-two year-old Jimmy Connors needs only 78 minutes to defeat 39-year-old Ken Rosewall, 6-1, 6-0, 6-1, in the most one-sided final in the history of the U.S. Championships/US Open. Billie Jean King wins her final US Open, singles title, defeating Evonne Goolagong in the final, 3-6, 6-3, 7-5.

1978: Chris Evert wins her fourth straight US Open title with a 7-5, 6-4 victory over 16-year-old Pam Shriver.

1979: John McEnroe defeats Vitas Gerulaitis, 7-5, 6-3, 6-3, in an all-New Yorker US Open men's singles final. Tracy Austin, at the age of 16 years, 8 months and 28 days, becomes the youngest US Open women's singles champion, ending Chris Evert's 31-match win streak at the US Open. 

1984: John McEnroe wins his fourth US Open singles title, defeating Ivan Lendl in the final, 6-3, 6-4, 6-1.