Tennis Australian Open 2018 Novak Djokovic of Serbia looks on during a break in his fourth round match against Chung Hyeon of South Korea at the Australian Open Grand Slam tennis tournament in Melbourne , Australia , 22 January 2018 . EPA / MAST IRHAM ▶ 기사 제보 및 문의 ▶ 기자 와 1 : 1 채팅    ▶ 평창동 계 올림픽 영상 공모전