The United States Open Tennis Championships is a difficult court tennis tournament. The tournament is the modern variation of one of the oldest tennis champions on the planet, the U.S. National Champion, for which guys's singles as well as guys's doubles were initial played in August 1881. Since 1987, the United States Open has been chronologically the fourth and also final Grand Slam competition of the year. The various other three, in sequential order, are the Australian Open, French Open, & Wimbledon. The United States Open starts on the last Monday of August as well as continues for two weeks, with the center weekend synchronizing with the UNITED STATE Labor Day holiday. The tournament contains 5 primary champions: guys's and also women's singles, guys's as well as women's doubles, and also mixed increases. The tournament additionally includes events for elderly, junior, and also wheelchair players. Given that 1978, the tournament has been played on acry...