Li Na of China celebrates after defeating Ekaterina Makarova of Russia at the US Open tennis championships in New York September 3, 2013. [Photo/Agencies]

BEIJING - China's top women tennis player Li Na is to play against the world No 1 man Novak Djokovic of Serbia in a battle of sexes in Beijing on Sept 27, organizers said here on Friday.

It's a charity match and its income will go to a tennis development fund in China, said the organizers.

Both Li Na and Djorkovic are playing the US Open, where Li Na faces world No 1 Serena Williams in the semifinals and Djorkovic meets Stanislas Wawrinka from Switzerland at the same stage.