Novak Djokovic defeats Alex De Minaur to reach Australian Open quarter-finals

The nine-time champion was fighting fit in Melbourne. 

Novak Djokovic has reached the quarter-finals of the Australian Open for the 13th time (Ng Han Guan/AP)

Novak Djokovic was firing on all cylinders as he dismantled home favourite Alex De Minaur to reach the quarter-finals of the Australian Open for the 13th time.

The nine-time champion’s damaged left hamstring has dominated discussions around his chances of triumphing again at Melbourne Park but there were no signs of discomfort here as he eased to a 6-2 6-1 6-2 victory with a ruthless display.