The 1927 U.S. National Championships was a tennis tournament that took place on the outdoor grass courts at the West Side Tennis Club, Forest Hills in New York City, New York and the Longwood Cricket Club in Chestnut Hill, Massachusetts. The women's tournament was held from August 22 until August 30 at Forest Hills, the men's and mixed doubles from August 30 until September 5 at Chestnut Hill, and men's singles from September 12 until September 17 at Forest Hills. It was the 47th staging of the U.S. National Championships and the fourth Grand Slam tennis event of the year. This edition saw the introduction of seedings in the draw which were meant to prevent the best players from meeting each other in the early rounds of the tournament. US Open 1927: September 12–12, 1927 at West Side Tennis Club Longwood Cricket Club. Men's singles: René Lacoste — 5th major title. Women's singles: Helen Wills — 5th major title. Wiki link