CANBERRA, Dec. 1 (Xinhua) -- World number one Caroline Wozniacki will play in next month's Sydney International for a fourth consecutive year, organizers said on Thursday.

The 21-year-old Danish star joins U.S. Open champion Sam Stosur and French Open winner Li Na at the January 8-14 event.

Wozniacki claimed six WTA Tour titles this year and had semifinal appearances at the Australian Open and U.S. Open.