BEIJING, Aug. 15 (Xinhua) -- 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