FLUSHING MEADOWS, N.Y., Sept. 7 (UPI) -- Top seed Roger Federer and No. 7 Nikolay Davydenko won their matches Thursday night to advance to the semifinals at the U.S. Open in Flushing Meadows, N.Y.
Reigning two-time champion Federer of Switzerland beat fifth-seeded American James Blake, 7-6 (9-7), 6-0, 6-7 (9-11), 6-4, in Thursday's quarterfinal round, to set up a semifinal match Saturday against Davydenko.
Davydenko rallied Thursday to beat No. 14 Tommy Haas of Germany, 4-6, 6-7 (3-7), 6-3, 6-4, 6-4, in a match that lasted almost four hours.
He will be appearing in his second career Grand Slam semifinal. He also reached the semis at the 2005 French Open.
The other men's semifinal will feature ninth-seeded American Andy Roddick and unseeded Russian Mikhail Youzhny.
Roddick topped 15th seed Australian Lleyton Hewitt Wednesday, while Youzhny upset second-seeded Rafael Nadal of Spain in the quarterfinals.
