Andy Roddick has improved his career record against Tommy Robredo of Spain to 10-0 and advanced to the Australian Open quarterfinals.
The seventh-seeded Roddick beat Robredo 7-5, 6-1, 6-3 today, staying on track for a semifinal appearance here for the fourth time in seven years.
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In the quarterfinals, Roddick will play the winner of the later fourth-round match Sunday between defending champion Novak Djokovic and 2006 runner-up Marcos Baghdatis.
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