
Nick Kyrgios of Australia competes during the men's singles match against Rafael Nadal of Spain at the Australian Open tennis championship in Melbourne, Australia on Jan. 27, 2020. (Xinhua/Bai Xuefei)

Nick Kyrgios of Australia competes during the men's singles match against Rafael Nadal of Spain at the Australian Open tennis championship in Melbourne, Australia on Jan. 27, 2020. (Xinhua/Bai Xuefei)