Australian Open: Sania, Bopanna enter quarterfinals of doubles events

Top seeded duo of Sania Mirza and Martina Hingis has advanced to the quarterfinals of the Australian Open Tennis. The Indo-Swiss pair beat Russian - Italian pair of Svetlana Kuznetsova and Roberta Vinci by 6-1, 6-3 in straight sets. India's Rohan Bopanna and Yung-Jan Chan of Chinese Taipei edges out Czech Andrea Hlavackova and Lukasz Kubot of Poland 4-6 6-3 (10-6) in a mixed doubles match. They have advanced to the quarterfinals of the Australian Open. In the Men's Singles, Canadian Milos Raonic served an upset. He took a gruelling five set against fourth seeded Swiss Stan Wawrinka to advance into quarterfinals. Raonic overcame Wawrinka's stunning fightback to win by 6-4,6-3,5-7,4-6,6-3. In Women's Singles, two-time champion Victoria Azarenka today defeated Czech Republic's Barbora Strycova to surge into an Australian Open quarter-final. The former world number one Belarusian was too strong for the Czech, winning 6-2, 6-4 in the 4th round in Melbourne. She will face seventh seed Angelique Kerber in the quarter-final. Earlier, Kerber defeated fellow German Annika Beck 6-4, 6-0 in the 4th round.