Tennis Australian Open 2018 Chung Hyeon of South Korea in action during his fourth round match against Novak Djokovic of Serbia 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