Chung holdspublished at 11:24 Greenwich Mean Time 22 January 2018
*Djokovic 6-7 (4-7) 5-7 5-6 Chung
I said Hyeon Chung doesn't like to celebrate, but that passing forehand as he was scuttling back towards his own baseline brings a huge roar and fist pump to boot.
The 21-year-old pulls out a massive hold.
He's one game away from the quarter-finals.