Djokovic claims title of Mubadala World Tennis Championship

Novak Djokovic of Serbia reacts during his match against Kevin Anderson of South Africa at the 2018 Mubadala World Tennis Championship final in Abu Dhabi, the United Arab Emirates (UAE), on Dec. 29, 2018. Novak Djokovic won 2-1 and claimed the title of the event. (Xinhua/Mahmoud Khaled)