In other matches, Russian Nikolay Davydenko completed a rain-delayed 6-1, 5-7, 6-3, 6-0 fourth-round victory over British teenager Andy Murray, while 14th seed Tommy Haas edged former champion Marat Safin, Safina's brother, 4-6, 6-3, 2-6, 6-2, 7-6.
Davydenko needed only 36 minutes to whip Murray 6-0 during the one set played on Wednesday after rain interrupted their match a day earlier.
"I never played against someone who's played a set as well as that," Murray said.
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