World number three Rafael Nadal has been stunned by seventh ranked Tomas Berdych in the quarterfinals of the ongoing Australian Open Tennis Tournament. In the Men's Singles event, Czech Tomas Berdych ousted Spaniard Rafael Nadal in straight sets 6-2, 6-0, 7-6 to book the semifinal berth of the season's first grand slam. In the other quarterfinal match to be played today, Briton Andy Murray will take on the unseeded Australian Nick Kyrgios.In the Women's singles event, Russian Maria Sharapova has entered the semifinals. In the quarterfinals World Number two Sharapova demolished seventh seed Eugenie Bouchard of Canada 6-3, 6-2. In the other quarterfinals, third-ranked Simona Halep was defeated by tenth seed, Ekaterina Makarova 4-6, 0-6.Sania Mirza and Leander Paes have carved out contrasting wins with their respective partners to reach the mixed doubles quarterfinals of the tournament yesterday.