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 US National Championship, for which men's singles and men's doubles were first played in August 1881.
Since 1987, the US Open has been chronologically the fourth and final Grand Slam tournament of the year. The other three, in chronological order, are the Australian Open, French Open and Wimbledon. The US Open starts on the last Monday of August and continues for two weeks, with the middle weekend coinciding with the US Labor Day holiday.
The tournament consists of five primary championships: men's and women's singles, men's and women's doubles, and mixed doubles. The tournament also includes events for senior, junior, and wheelchair players. Since 1978, the tournament has been played on acrylic hard courts at the USTA Billie Jean King National Tennis Center in Flushing Meadows–Corona Park, Queens, New York City. The US Open is owned and organized by the United States Tennis Association (USTA), a non-profit organization, and the chairperson of the US Open is Patrick Galbraith. Revenue from ticket sales, sponsorships, and television contracts are used to develop tennis in the United States.
The US Open employs standard tiebreakers (first to 7, win by 2) in every set of a singles match. For the other three Grand Slam events, there are special scoring methods for a match that reaches 6–6 in the last possible set (the third for women and the fifth for men): in the French Open, the decisive set continues until a player takes a two-game lead, in Australia, an extended tiebreaker to 10 points is played, and at Wimbledon, a standard tiebreaker is played only if the game score reaches 12–12. As with the US Open, these events use standard tiebreakers to decide the other sets.
Wikipedia — https://en.wikipedia.org/wiki/US_Open_(tennis)