Her younger sister Serena Williams, the current number one, kicked out Elaterina Makarova the evening before 7-6, 6-0.

Ivanonic appeared to be exhausted during the game as the 26-year old Serbian had a tough Tuesday behind her when she beat Germany's Angelique Kerber in three tough sets, reported Xinhua.

For Williams, the victory was a revenge for her defeat in the final in Auckland, New Zealand, earlier this year.

Thirty-three-year-old Venus Williams will face Flavia Panetta from Italy in the quarter finals.


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