Pete Sampras won the men's title and Gabriela Sabatini won the women's title.
According to the U.S. Open website (refer to the link, below), the women's U.S. Open singles title was won in 1990 by Gabriela Sabatini.
Kim Clijsters.
Kim Clijsters
Justine Henin
Fred Stolle
jimmy connor
Pete Sampras
Pancho Gonzalez won the Championship of both the years 1948 & 1949.
Hale Irwin at Medinah.
Pete Sampras defeated Andre Agassi who was the womens tennis us championship in 1990
According to the U.S. Open website (refer to the link, below), the women's U.S. Open singles title was won in 1990 by Gabriela Sabatini.
Serena Williams won the tournament in 1999, winning her first slam, beating Martina Hingis in the final.