When was the first tennis major comprising the Grand Slam before the US Open first held?
US Open (tennis) 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 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.
1889 U.S. National Championships (tennis) List of champions of the 1889 U.S. National Championships (now known as the US Open). The men's tournament was held from 27 August to 3 September on the outdoor grass courts at the Newport Casino in Newport, Rhode Island. The women's tournament was held from 11 June to 15 June on the outdoor grass courts at the Philadelphia Cricket Club in Philadelphia, PA. It was the 9th U.S. National Championships and the second Grand Slam tournament of the year. The inaugural U.S. Women's National Doubles Championship was held in 1889 and like the women's singles was played at the Philadelphia Cricket Club.: