Li Na of China returns a ball at the Hopman Cup against Spain's Garrigues on Jan. 3, 2012.[Source:Sina.com]

China'sLi Nais seeded fifth as the seedings for this month's Australian Open have been released.

The seedings for this month's Australian Open have been announced, with Novak Djokovic and Caroline Wozniacki receiving top billing.

Djokovic, after his superb 2011 season that saw him become world No1, tops the men's side of the draw from Rafael Nadal and Roger Federer, with Britain's Andy Murray the fourth seed.

On the women's list, world number one Wozniacki is still searching for her first Grand Slam but she's in danger of losing her top ranking to Czech Petra Kvitova, who is seeded second for the Melbourne event. Belarusian Victoria Azarenka is the third seed ahead of 2008 winner Maria Sharapova.

Last year's Australian Open runner-up, China's Li Na, is seeded fifth, with the US Open champion and local hope Samantha Stosur sixth. Russia's Vera Zvonareva is the seventh seed, in front of Poland's Agnieszka Radwanska, with Frenchwoman Marion Bartoli and Andrea Petkovic of Germany making up the top ten.