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Summary
Roger Federer will play Nikolay Davydenko in the quarter-finals at the Australian Open after the Swiss brushed aside Lleyton Hewitt. Davydenko withstood a Fernando Verdasco. In the fourth round Serena Williams and Venus Williams advance to the quarter final stage by defeating Australian Sam Stosurs 6-4, 6-2. Venus Williams overcame a sluggish start against Italy's Francesca Schiavone. After her upset win Caroline Wozniacki is also out of the tournament. World Number 4 Caroline Wozniacki was beaten by Na-Li.Austrlian Lleyton Hewitt was also beaten Roger Federer. French Jo-Wilfried Tsonga defeated Spainish Nicolas Almagro. Polish Lukasz Kubot was beaten by Serbian Novak Djokovic. Spainsh star Fernando Verdasco was beaten by Russian Nikolay Davydenko.
