Britain's Andy Murray reacts during a press conference of the ATP Qatar Open tennis tournament 2017 at the Khalifa International Tennis Complex in Doha, capital of Qatar, on Jan. 1, 2017. The tournament will be held on Jan. 2-7. (Xinhua/Nikku)
Novak Djokovic of Serbia reacts during a press conference of the ATP Qatar Open tennis tournament 2017 at the Khalifa International Tennis Complex in Doha, capital of Qatar, on Jan. 1, 2017. The tournament will be held on Jan. 2-7. (Xinhua/Nikku)
Novak Djokovic of Serbia reacts during a press conference of the ATP Qatar Open tennis tournament 2017 at the Khalifa International Tennis Complex in Doha, capital of Qatar, on Jan. 1, 2017. The tournament will be held on Jan. 2-7. (Xinhua/Nikku)