And sisters Serena and Venus Williams both eked out three-set victories to set up a quarterfinal clash, their first meeting in a tournament since the 2003 Wimbledon final, where Serena was victorious.
Serena, the three-time defending champion, defeated Russian Elena Likhovtseva 6-4, 1-6, 6-4, while Venus, the eighth seed, beat Argentine qualifier Catalina Castano 6-4, 2-6, 6-1.
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