Former No.1 Ana Ivanovic, always a popular face in Australia, hit the practice courts on the weekend.
Serena Williams, another former No.1 and a five-time Australian Open champion, on the practice courts.
The former No.1s have been abundant in Brisbane - Kim Clijsters cruised through her first round match.
No.8 seed Dominika Cibulkova was the first upset victim of the week, falling to Daniela Hantuchova.
Daniela Hantuchova came from 63 20 down to beat fellow Slovak Dominika Cibulkova in three, 36 64 63.
Playing her first match since the US Open, Serena Williams eased past Chanelle Scheepers, 62 63.
No.1 seed Sam Stosur signed autographs after a routine 62 63 first round win over Anastasiya Yakimova.
Kim Clijsters came from 3-0 down in the third set to beat Ana Ivanovic in the second round, 61 16 63.
Dominika Cibulkova and fellow Slovak Janette Husarova were a wildcard team into the doubles draw.
Vera Dushevina and Shahar Peer saved match point to beat Domi Cibulkova and Janette Husarova, 36 64 119.
No.2 seed Andrea Petkovic powered into the quarterfinals, beating Barbora Zahlavova Strycova, 76(2) 60.
Iveta Benesova stunned Sam Stosur in the second round, 64 62, having never even won a set against her.
Serena Williams, seeded No.4, drew a packed crowd for her second round match with Bojana Jovanovski.
Serena Williams rolled her ankle during the match but still managed to beat Bojana Jovanovski, 62 64.
Serena Williams unfortunately had to withdraw from the tournament afterwards due to her ankle injury.