
Cilic Marin of Croatia competes during men's single's second round match between Cilic Marin of Croatia and Mcdonald Mackenzieat of the US at 2019 Australian Open at Melbourne Park in Melbourne, Australia, on Jan. 16, 2019. (Xinhua/Hu Jingchen)

Cilic Marin of Croatia competes during men's single's second round match between Cilic Marin of Croatia and Mcdonald Mackenzieat of the US at 2019 Australian Open at Melbourne Park in Melbourne, Australia, on Jan. 16, 2019. (Xinhua/Hu Jingchen)