Tennis Australian Open 2018 Novak Djokovic of Serbia looks on during 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 / MARK CRISTINO ▶ 기사 제보 및 문의 ▶ 기자 와 1 : 1 채팅    ▶ 평창동 계 올림픽 영상 공모전