The 1903 U.S. National Championships was a tennis tournament that took place in June and August of 1903. The women's tournament was held from June 24 to June 27 on the outdoor grass courts at the Philadelphia Cricket Club in Philadelphia, Pennsylvania. The men's tournament was held from August 16 to August 24 on the outdoor grass courts at the Newport Casino in Newport, Rhode Island. It was the 23rd United States National Championships and the second Grand Slam tournament of the year. British Laurence Doherty became the first non-US winner of the men's championship. US Open 1903: August 18–18, 1903. Men's singles: Laurence Doherty — 3rd major title. Women's singles: Elisabeth Moore — 3rd major title. Wiki link