Poland's Agnieszka Radwanska will lead a field featuring seven of the top 10 women players for next month's Sydney International, organisers said on Thursday.
World number four Radwanska is the likely top seed but will face a fierce challenge from three Grand Slam champions, China's Li Na, the Czech Republic's Petra Kvitova and Australia's Samantha Stosur.
Angelique Kerber, French Open finalist Sara Errani and former world number one Caroline Wozniacki are the other top 10 players in the draw.
The men's line-up features the French pair of Jo-Wilfried Tsonga and Richard Gasquet.
The Sydney International takes place from January 6 to 12.