Novak Djokovic's 2018 Australian Open came to a crashing halt in the fourth round as the Serbian was defeated in straight sets by Hyeon Chung, 7-6 (4), 7-5, 7-6 (3). Chung, ranked 58th, upset the former world No. 1 with 6-of-10 break point conversions to Djokovic's 5-of-19, while the latter committed more than Following the match, Chung admitted he was...