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The 1990 U.S. Women's Hardcourt Championships, also known by its sponsored name Post Cereals US Hardcourt, was a women's tennis tournament played on outdoor hard courts at the McFarlin Tennis Center in San Antonio, Texas in the United States and was part of the Tier III category of the 1990 WTA Tour. It was the 25th edition of the tournament and was held from March 28 through April 1, 1990. Second-seeded Monica Seles won the singles title and earned $45,000 first-prize money.
It was Jordan's 1st doubles title of the year and the 38th of her career. It was Smylie's 2nd doubles title of the year and the 26th of her career.
References
"Women's Hardcourt". El Paso Times. AP. March 28, 1990. p. 2C – via Newspapers.com. Results Tuesday of qualifying matches in the U.S. Women's Hardcourt Championships played at the McFarlin Tennis Center
John Barrett, ed. (1991). The International Tennis Federation : World of Tennis 1991. London: Collins Willow. p. 150, 157. ISBN9780002184038.
Monica Seles
Kathy Jordan / 
Elizabeth Smylie
Manuela Maleeva-Fragniere 6–4, 6–3