Serena Williams beat Lindsay Davenport 6-3 6-7 7-5 on Tuesday night to earn a spot in the U.S. Open semifinals against former champion, top seed and world number one Martina Hingis.
Hingis reached the semis by defeating Czech teen-ager Daja Bedanova 6-2 6-0 in 42 minutes.
On the men's side, world number one and top seed, Brazilian Gustavo Kuerten, also advanced, reaching the quarter-finals with a 6-4 6-4 7-6 victory over Spaniard Albert Costa.
The Brazilian three-times French Open winner will now meet Russian seventh seed Yevgeny Kafelnikov, a former French and Australian Open winner.
Last year's junior world champion, 19-year-old American Andy Roddick, made it to the quarter-finals with a 6-2 6-2 6-4 victory over Spaniard Tommy Robredo.
He will face Wednesday morning's winner of the suspended match between fourth-seeded Australian Lleyton Hewitt and 16th seed Tommy Haas of Germany.