The 1890 U.S. National Championships (now known as the US Open) was a tennis tournament that took place from June to August 1890. The women's singles and doubles competitions were held from June 10 to June 13 on the outdoor grass courts at the Philadelphia Cricket Club in Philadelphia, Pennsylvania. The men's singles and doubles competitions were held from August 18 to August 27 on the outdoor grass courts at the Newport Casino in Newport, Rhode Island. It was the 10th U.S. National Championships and the second Grand Slam tournament of the year.
Oliver Campbell defeated Henry Slocum 6âÂÂ2, 4âÂÂ6, 6âÂÂ3, 6âÂÂ1
Ellen Roosevelt defeated Bertha Townsend 6âÂÂ2, 6âÂÂ2
Valentine Hall / Clarence Hobart defeated Charles Carver / John Ryerson 6âÂÂ3, 4âÂÂ6, 6âÂÂ2, 2âÂÂ6, 6âÂÂ3
Grace Roosevelt / Ellen Roosevelt defeated Bertha Townsend / Margarette Ballard 6âÂÂ1, 6âÂÂ2