Novak Djokovic wins 2020 Australian Open(1/4)

Novak Djokovic of Serbia kisses 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/Bai Xuefei)

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/Bai Xuefei)

Novak Djokovic of Serbia celebrates after the men's singles final against Dominic Thiem of Austria at 2020 Australian Open in Melbourne, Australia on Feb. 2, 2020. (Xinhua/Bai Xuefei)

Novak Djokovic (L) of Serbia and Dominic Thiem of Austria pose for pictures during the awarding ceremony after the men's singles final at 2020 Australian Open in Melbourne, Australia on Feb. 2, 2020. (Xinhua/Bai Xuefei)