Heather Watson plays tennis.
Heather Watson . In her junior career , Watson won the US Open and gold at the 2008 Commonwealth Youth Games . The United States Open Tennis Championships is a hardcourt 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 was first contested in 1881 . Since 1987 , the US Open has been chronologically the fourth and final tennis major comprising the Grand Slam each year ; the other three , in chronological order , are the Australian Open , the French Open and Wimbledon . The US Open is owned and organized by the United States Tennis Association ( USTA ) , a not-for-profit organization .