French Open 2010: Day 6

Switzerland's Roger Federer reacts after he defeated Germany's Julian Reister at the end of their men's third round match. Federer won 6-4, 6-0, 6-4. (AFP photo)

US Serena Williams returns the ball to Germany's Julia Goerges during the women's second round match in the French Open during her 6-1, 6-1 win. (AFP photo)

Spain's Rafael Nadal plays a return to Argentina's Horacio Zeballos during their men's second round match in the French Open. The Spaniard eased past his opponent in straight sets; 6-2, 6-2, 6-3. (AFP photo)

Serbia's Novak Djokovic looks on during his second round match against Japan's Kei Nishikori. The Serbian won 6-1, 6-4, 6-4. (AFP photo)

US Venus Williams inspects her raquet during her women's second round match against Slovakia's Dominika Cibulkova in her 6-3, 6-4 win. (AFP photo)

British Andy Murray looks on prior to the start of the men's third round match against Cyprus' Marco Baghdatis in the French Open tennis championship. (AFP photo)

Russia's Maria Sharapova reacts after she defeated Belgium's Kirsten Flipkens during their women's second round match in the French Open. (AFP photo)

Spain's Fernando Verdasco serves to France's Florent Serra in his second round win in four sets(6-2, 6-2, 0-6, 6-4) (AFP photo)

France's Marion Bartoli returns the ball to France's Olivia Sanchez in the second round. (AFP photo)

China's Jie Zheng returns the ball to Russia's Anastasia Pivovarova during their second round match. (AFP photo)