Wimbledon women's singles round four

Updated 1841 GMT (0241 HKT) July 2, 2012
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World No. 1 Maria Sharapova shows her disappointment after losing to Sabine Lisicki in the fourth round at Wimbledon, ending the Russian's hopes of repeating her 2004 success. Getty Images
Lisicki, who was beaten by Sharapova in last year's semifinals, was delighted after securing a quarterfinal clash with fellow German Angelique Kerber. AFP/Getty Images
Eighth seed Kerber, also a quarterfinalist at last month's French Open, reached the last eight in London for the first time after beating former world No. 1 Kim Clijsters. AFP/Getty Images
Clijsters' final appearance at Wimbledon ahead of her second retirement later this year lasted less than 50 minutes as the four-time grand slam winner lost 6-1 6-1. AFP/Getty Images
Serena Williams is also through to the last eight as she seeks her first grand slam title since winning Wimbledon for the fourth time in 2010. Getty Images
The American sixth seed progressed despite losing the second set against Kazakhstan's Yaroslava Shvedova on day seven at the All England Tennis Club. AFP/Getty Images
The 13-time grand slam winner will next play defending champion Petra Kvitova. The Czech Republic's world No. 4 beat 2010 French Open champion Francesca Schiavone. Getty Images
Young Austrian Tamira Paszek reached the quarterfinals for the second year in a row, beating Italian 21st seed Roberta Vinci 6-2 6-2, and will next face world No. 2 Victoria Azarenka. Getty Images
Paszek will hope to fare better than Serbia's Ana Ivanovic, who was thrashed 6-1 6-0 by Australian Open champion Azarenka in a one-sided battle of former top-ranked players. AFP/Getty Images
Maria Kirilenko beat China's Peng Shuai to earn her second grand slam quaerterfinal appearance. The Russian will take on Polish third seed Agnieszka Radwanska, who defeated Italian qualifier Camila Giorgi. Getty Images