Video PlayerClose
Novak Djokovic of Serbia hits a return during the men's singles quarterfinal match against Milos Raonic of Canada at the Australian Open tennis championship in Melbourne, Australia on Jan. 28, 2020. (Xinhua/Bai Xuefei)
Novak Djokovic of Serbia hits a return during the men's singles quarterfinal match against Milos Raonic of Canada at the Australian Open tennis championship in Melbourne, Australia on Jan. 28, 2020. (Xinhua/Bai Xuefei)