Video PlayerClose
Grigor Dimitrov of Bulgaria serves during the men's singles fourth round match against Nick Kyrgios of Australia at Australian Open 2018 in Melbourne, Australia, Jan. 21, 2018. (Xinhua/Bai Xuefei)
Grigor Dimitrov of Bulgaria serves during the men's singles fourth round match against Nick Kyrgios of Australia at Australian Open 2018 in Melbourne, Australia, Jan. 21, 2018. (Xinhua/Bai Xuefei)