The very earlier tournaments were played on grass surface followed by the clay and now currently played on the acrylic hardcourts. The main court is the Arthur Ashe Stadium, which was named after the designation victor at the inaugural 1968 US Open Championships, the first in which professionals could compete. The home of the US championship tournament has 22 courts. The tournament is held at The USTA Billie Jean King National Tennis Center, a stadium complex within Flushing Meadows– Corona Park in Queens, New York City, United States every year. The tournament is owned and organised by the United State Tennis Association (USTA). It also features wheelchair, senior, and junior events.The US Open is the only Grand Slam competition that has been held perpetually since it commenced. Presently the tournament is embodied with five primary categories - men's and women's singles, men's and women's doubles, and mixed doubles. The tournament comes under the list of one of the oldest tennis tournaments and has been played since 1881 only with Men.The tournament was earlier known as the U.S. The grand event is followed by the Australian open, the French open and the most prestigious Wimbledon. US Open, formally known as the United States Open Tennis Championships, an international tennis tournament chronologically considered as the fourth and the final grand slam of the year.