The US Open follows Wimbledon in the annual Grand Slam tennis calendar.
The four Grand Slam tournaments traditionally run in this order: the Australian Open, the French Open, Wimbledon, and the US Open. Wimbledon is the third major of the season, usually played in late June and early July, while the US Open is held in late August and early September.
The two tournaments also differ sharply in setting and surface. Wimbledon is played on outdoor grass at the All England Lawn Tennis and Croquet Club in London. The US Open is played on hard courts at the USTA Billie Jean King National Tennis Center in New York City, whose main stadium is Arthur Ashe Stadium.
A common mix-up is naming the French Open, because it immediately precedes Wimbledon. The French Open is the second Grand Slam and is played on clay. The US Open is the fourth and final Grand Slam of the calendar, although other major professional events continue after it, including the ATP and WTA Finals.