MELBOURNE, AUSTRALIA. JAN. 24, 2018 : Hyeon Chung reacts during Australian Open Tennis Mens Singles Quarter Final in Melbourne, Australia on January 24, 2018. Hyeon Chung defeated Tennys Sandgren 6-4 7-6 6-3. Photographer: Wayne Ludbey / PENTA PRESS <저작권자(c) 연합뉴스, 무단 전재-재배포 금지>