The United States Open Tennis Championships is a hard court tennis tournament. The tournament is the modern version of one of the oldest tennis championships in the world, the U.S. National Championship, for which men's singles and men's doubles were first played in 1881.
It is chronologically the fourth and last official Grand Slam tennis tournament of the season. It is held annually between August and September, in five modalities: men's and women's singles, men's and women's doubles and mixed doubles, although there are also additional tournaments for junior and senior players. Since 1978, the tournament has been held at the USTA Billie Jean King National Tennis Center (renamed in 2006), in Flushing Meadows, New York.
The US Open went from being a purely recreational high society event to a tournament that distributes $16 million to more than 600 participants, including close to a million for the winners of individual tournaments. In 2020 the winner in the men's category was the Austrian Dominic Thiem, and in the women's category, the Japanese Naomi Osaka.