Australian Open semifinalist Zheng next faces Alicia Molik, who cruised into the round of 16 with a 6-0, 6-2 victory over British qualifier Elena Baltacha.

澳网进入半决赛的郑洁，下一场将要迎战的是莫里克，莫里克是以6-0，6-2战胜了英国入围选手巴堤查而挤入16强的。

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Azarenka's reward is a clash with unseeded German Anna-Lena Groenefeld, who beat Australia's Alicia Molik 6-4 6-4.

CNN: STORY HIGHLIGHTS

There was better news for Kleybanova's compatriot Nadia Petrova , who needed 70 minutes to beat home favourite Alicia Molik 6-4 6-1.

BBC: Australian Open: Seventh seed Jelena Jankovic falls

Jankovic, a leading contender for this event, defeated Australia's Alicia Molik 6-0 6-4 in a match that finished at nearly 2100 local time.

BBC: Serena Williams and Caroline Wozniacki make progress