USA Open History
The event was first held in August 1881, known then as the U.S. National Singles Championship for men. It was played at the Newport Casino, Newport, Rhode Island.
From 1884-1911 for men and from 1887-1918 for women, a challenge round system (in which the defending champion qualified for the following year's final) was used. A five set women's final was played from 1887-1901.
The US Open was known as the Patriotic Tournament in 1917 during World War I. In 1968 and 1969 both Amateur and Open Championships were held, becoming an exclusively Open Championship in 1970.