Belgian 28th seed Yanina Wickmayer , who won the the Hobart International title last week , lost 7-5 6-2 to Kazakhstan 's 62nd-ranked Galina Voskoboeva . Top seed Caroline Wozniacki books her place in Australian Open second round . Defending champion Nina Bratchikova also through , alongside Third seed Caroline Wozniacki . Third seed Victoria Azarenka advances , as does Poland 's Agnieszka Radwanska . Australian 19th seed Flavia Pennetta beaten by Italian qualifier Nina Bratchikova .
Top seed Caroline Wozniacki books her place in Australian Open second round . Defending champion Nina Bratchikova also through , alongside Third seed Caroline Wozniacki . Third seed Victoria Azarenka advances , as does Poland 's Agnieszka Radwanska . Australian 19th seed Flavia Pennetta beaten by Italian qualifier Nina Bratchikova .