Serena Williams of USA is out of the Wimbledon Tennis tournament. In an upset Marion Bartoli of France beat her 6-3,7-6. Meanwhile, Maria Sharapova of Russia, Sabine Lisicki of Germany, and Victoria Azarenka of Belarus have entered the quaterfinals of the women's singles Wimbledon tennis tournament. At London Sharapova beat Shuai Peng 6-4, 6-2 while Sabine Lisicki overpowered Petra Cetkovska 7-6, 6-7. In another fourth round encounter Victoria Azarenka sidelined Nadia Petrova of Russia 6-2 , 6-2 to book a place in the last eight. In the men's singles Bernard Tomic of Australia beat Xavier Malisse 6-1, 7-5, 6-4 to enter the quarterfinals.