Australian Open results (updated)

Following are the results of the Australian Open at Melbourne Park on Monday (prefix number denotes seeding):

Men's singles:

4th round:

4-Stan Wawrinka, Switzerland, bt Guillermo Garcia-Lopez, Spain, 7-6 (7/2), 6-4, 4-6, 7-6 (10/8)

5-Kei Nishikori, Japan, bt 9-David Ferrer, Spain, 6-3, 6-3, 6-3

8-Milos Raonic, Canada, bt 12-Feliciano Lopez, Spain, 6-4, 4-6, 6-3, 6-7 (7/9), 6-3

1-Novak Djokovic, Serbia, bt Gilles Muller, Luxemburg, 6-4, 7-5, 7-5

Women's singles:

4th round:

11-Dominika Cibulkova, Slovakia, bt Victoria Azarenka, Belarus, 6-2, 3-6, 6-3

1-Serena Williams, United States, bt 24-Garbine Muguruza, Spain, 2-6, 6-3, 6-2

Madison Keys, United States, bt Madison Brengle, United States, 6-2, 6-4

18-Venus Williams, United States, bt 6-Agnieszka Radwanska, Poland, 6-3, 2-6, 6-1. Endi