Video PlayerClose

's Alexander Zverev serves during the men's singles third round match against Chung Hyeon of at Australian Open 2018 in Melbourne, Australia, Jan. 20, 2018. Alexander Zverev lost 2-3. (Xinhua/Li Peng)
 
 
's Alexander Zverev serves during the men's singles third round match against Chung Hyeon of at Australian Open 2018 in Melbourne, Australia, Jan. 20, 2018. Alexander Zverev lost 2-3. (Xinhua/Li Peng)