 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 champions damaged left hamstring has dominated discussion around his chances of triumphing again at Melbourne Park but there were no signs of discomfort here as he ... Australian Open: Novak Djokovic dismantles home favourite Alex De... 