In a later second round match, former wordl number one Ana Ivanovic of Serbia beat Switzerland's Timea Bacsinszky 6-2 2-6 6-4.

CNN: Clijsters wins again in Brisbane

The American, who defeated Timea Bacsinszky of Switzerland in her opening match on Tuesday after a first-round bye, will next face Maria Kirilenko.

CNN: Serena and Venus headed for Rome semifinal clash

World number one Serena Williams also overcame Swiss opposition to join her sister in round three after a 7-6 6-1 win over Timea Bacsinszky.

CNN: Venus brushes aside Schnyder in Rome