Australian Open Results

Melbourne, Jan 26 (DPA) The following are the results of the fourth round of the $15.5 million Australian Open here Monday:

Women's singles, fourth round: Serena Williams, 2, US, def. Victoria Azarenka, 13, Belarus, 3-6,4-2, retired (illness); Elena Dementieva, 4, Russia, def. Dominika Cibulkova, Slovakia, 6-2, 6-2; Svetlana Kuznetsova, 8, Russia, def. Zheng Jie, China, 4-1, retired (left hand injury); Carla Suarez Navarro, Spain, def. Anabel Medina Garrigues, Spain, 6-3, 6-2;

Men's singles, fourth round: Rafael Nadal, 1, Spain, def. Fernando Gonzalez, 13, Chile, 6-3, 6-2, 6-4; Gilles Simon, 6, France, def. Gael Monfils, 12, France, 6-4, 2-6, 6-1, retired (right wrist injury); Jo-Wilfried Tsonga, 5, France, def. James Blake, 9, US, 6-4, 6-4, 7-6 (7-3); Fernando Verdasco, 14, Spain, def. Andy Murray, 4, Britain, 2-6, 6-1, 1-6, 6-3, 6-4