BEIJING - OCTOBER 10:  Novac Djokovic of Serbia serves against Robin Soderling of Sweden in their semi-finals during day nine of the 2009 China Open at the National Tennis Centre on October 10, 2009 in Beijing, China. Getty Images logo Getty Images 1 month ago

BEIJING - OCTOBER 10: Novac Djokovic of Serbia serves against Robin Soderling of Sweden in their semi-finals during day nine of the 2009 China Open at the National Tennis Centre on October 10, 2009 in Beijing, China.