Following are the results from the Beijing Olympic tennis event on Thursday (prefix number denotes seeding):

Men's singles quarterfinals:

2-Rafael Nadal, Spain, bt Jurgen Melzer, Austria, 6-0, 6-4

12-Fernando Gonzalez, Chile, bt Paul-Henri Mathieu, France, 6-4, 6-4

3-Novak Djokovic, Serbia, bt Gael Monfils, France, 4-6, 6-1, 6-4

8-James Blake, United States, bt 1-Roger Federer, Switzerland, 6-4, 7-6(7-2)

Men's doubles quarterfinals:

Arnaud Clement/Michael Llodra, France, bt 8-Igor Andreev/Nicolay Davydenko, Russia, 6-2, 6-7(4), 6-4

1-Bob Bryan/Mike Bryan, United States, bt Chris Guccione/Lleyton Hewitt, Australia, 6-4, 6-3

Simon Aspelin/Thomas Johansson, Sweden, bt Mariusz Fyrstenberg/Marcin Matkowski, Poland, 7-6 (7-5), 6-4

Women's singles quarterfinals:

Li Na, China, bt 7-Venus Williams, United States, 7-5, 7-5

5-Elena Dementieva, Russia, bt 4-Serena Williams, United States, 3-6, 6-4, 6-3

9-Vera Zvonareva, Russia, bt Sybille Bammer, Austria, 6-3, 3-6, 6-3

Women's doubles second round:

4-Anabel Medina Garrigues/Virginia Ruano Pascual, Spain, bt Samantha Stosur/Rennae Stubbs, Australia, 4-6, 6-4, 6-4

(Xinhua News Agency August 15, 2008)