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Novak Djokovic of Serbia poses with the trophy during the awarding ceremony after the men's singles final against Dominic Thiem of Austria at 2020 Australian Open in Melbourne, Australia on Feb. 2, 2020. (Xinhua/Zhu Hongye)

Novak Djokovic of Serbia poses with the trophy during the awarding ceremony after the men's singles final against Dominic Thiem of Austria at 2020 Australian Open in Melbourne, Australia on Feb. 2, 2020. (Xinhua/Zhu Hongye)