Sania Mirza eased past number eight seed Dinara Safina of Russia 6-1, 6-2 in the third round of the Acura Classic on Thursday.
But the Indian could not keep the winning form in doubles and she, and Israeli partner Shahar Peer, went down 6-3, 3-6, 10-12 to Su-Wei Hsieh of the Chinese Taipei and Russia's Alla Kudryavtseva in the second round.
Sania, who has beaten higher-ranked players like Tatiana Golovin, Peer and Patty Schnyder during the on-going hard court season, will meet top seed Maria Sharapova in the quarterfinals.
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