Novak Djokovic backs Danielle Collins’ approach to dealing with boisterous fans - Collins has received mixed reactions for her confrontational response after beating Destanee Aiava.

Read what Novak Djokovic had to say about Danielle Collins' controversial action and remarks after her Australian Open victory.

Count Novak Djokovic as being in Danielle Collins’ corner. He thinks her response to booing fans at the Australian Open was absolutely fine — which should come as no surprise, given the way Djokovic gets into back-and-forths with hecklers at his matches,