article_snippet: The 33-year-old triumphed 6-1 6-1 to set up a last-16 clash against former two-time grand slam champion Svetlana Kuznetsova, who ended the challenge of 13th seed Angelique Kerber 6-3 3-6 6-3.
article_snippet: Third seed Simona Halep was a 6-4 7-5 winner over Camila Giorgi, but the 30th seed's Italian compatriots fared better.
article_snippet: Fifteenth seed Flavia Pennetta defeated former world
article_snippet: No 1 Victoria Azarenka 7-5 7-6 (8/6) and Sara Errani, seeded 11th, booked Serena Williams spot in the last 16 after hitting back to oust Garbine Muguruza 4-6 6-4 6-1.
article_snippet: Elsewhere, Switzerand's Belinda Bencic knocked out German qualifier Tatjana Maria 6-4 7-5.
article_snippet: Victoria Azarenka crashed out after losing two close sets to Flavia Pennetta .
article_snippet: There were, however, shock defeats for seventh seed Stan Wawrinka and Jo-Wilfried Tsonga, seeded 11th and playing in Donald Young first competition this year.
article_snippet: Stan Wawrinka was edged out by Adrian Mannarino 7-6 (7/4) 7-6 (7/5), while Tsonga was sent packing after a 6-4 7-6 (7/4) defeat to French compatriot Gael Monfils.
article_snippet: Fifteenth seed Kevin Anderson beat Leonardo Mayer 6-4 6-4 while Austria's Dominic Thiem came through 6-4 6-3 against Jack Sock of the United States.
highlights_snippet: No 1 will play Svetlana Kuznetsova in the next round .
  