Novak Djokovic crashes out Australian Open fourth round

Novak Djokovic suffered a recurrence of his elbow problems and was beaten in the fourth round of the Australian Open by an inspired Chung Hyeon.

The 21-year-old Korean showed Djokovic-like powers of defence and a steely nerve at the big moments to take advantage of his opponent’s troubles and win 7-6 (7/4) 7-5 7-6 (7/3).