Novak Djokovic was hampered by a right wrist problem in Serbia's victory over Czech Republic on Tuesday and the world number one had it worked on again by a trainer before De Minaur earned a late break and went on to clinch the opening set. Djokovic was on a 43-match winning run in Australia and preparing for a tilt at an 11th Melbourne Park title having last lost in the country to Chung Hyeon in the fourth round of the 2018 edition when he was plagued by an elbow issue.
