BEIJING, Aug. 15 (Xinhua) -- Following are the results from the Beijing Olympic tennis event on Friday (prefix number denotes seeding):

    Men's singles semifinals:

    2-Rafael Nadal, Spain, bt 3-Novak Djokovic, Serbia, 6-4, 1-6, 6-4

    12-Fernando Gonzalez, Chile, bt 8-James Blake, United States, 4-6, 7-5, 11-9

    Men's doubles semifinals:

    4-Roger Federer/Stanislas Wawrinka, Switzerland, bt 1-Bob Bryan/Mike Bryan, United States, 7-6(6), 6-4

    Simon Aspelin/Thomas Johansson, Sweden, bt Arnaud Clement/Michael Llodra, France, 7-6(6), 4-6, 19-17

    Men's doubles quarterfinals:

    4-Roger Federer/Stanislas Wawrinka, Switzerland, bt 7-Mahesh Bhupathi/Leander Paes, India, 6-2, 6-4

    Women's singles quarterfinals:

    6-Dinara Safina, Russia, bt 2-Jelena Jankovic, Serbia, 6-2, 5-7, 6-3

    Women's doubles quarterfinals:

    8-Zheng Jie/Yan Zi, China, bt 1-Svetlana Kuznetsova/Dinara Safina, Russia, 6-3, 5-7, 10-8

    4-Anabel Medina Garrigues/Virginia Ruano Pascual, Spain, bt 5-Lindsay Davenport/Liezel Huber, United States, 5-7, 7-6(6), 8-6

    2-Serena Williams/Venus Williams, United States, bt 7-Elena Vesnina/Vera Zvonareva, Russia, 6-4, 6-0

    6-Alona Bondarenko/Kateryna Bondarenko, Ukraine, bt Flavia Pennetta/Francesca Schiavone, Italy, 6-1, 3-6, 7-5

    Women's doubles second round:

    2-Serena Williams/Venus Williams, United States, bt Ayumi Morita/Ai Sugiyama, Japan, 7-5, 6-2.