French Open champion Svetlana Kuznetsova has become the fifth player currently in the world's top 10 to confirm she will play at the Sydney International.
The event, which takes place from January 10-16, is the ideal warm-up for the Australian Open, which gets under way in Melbourne the following week.
"I have had some really great results there in the past and I am looking forward to having a great tournament in Sydney before the Australian Open," said the Russian.
The 24-year-old joins Serena Williams, Elena Dementieva, Caroline Wozniacki and Victoria Azarenka in the main draw for the event.