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