The unseeded Chung qualified for the quarter-finals after a dogged and technically impressive performance against one of the world’s best ever players.

Chung took the first two sets as Djokovic struggled to find his pre-injury form.

Djokovic had his moments but struggled to impose himself as he makes his way back in his first major since his return.

He forced Chung into a tie-break in the third set, but Chung’s assured performance carried him to victory.

More to follow…