Novak Djokovic claims title of men's singles final at 2019 Australian Open

Novak Djokovic (front) of Serbia reacts during the trophy awarding ceremony after the men's singles final match between Novak Djokovic of Serbia and Rafael Nadal of Spain at 2019 Australian Open in Melbourne, Australia, Jan. 27, 2019. (Xinhua/Bai Xuefei)