BEIJING - OCTOBER 10:  Novac Djokovic of Serbia celebrates his victory in the semi-finals against Robin Soderling of Sweden by hitting a ball into the crowd, 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 28 months ago

BEIJING - OCTOBER 10: Novac Djokovic of Serbia celebrates his victory in the semi-finals against Robin Soderling of Sweden by hitting a ball into the crowd, during day nine of the 2009 China Open at the National Tennis Centre on October 10, 2009 in Beijing, China.