Danielle Collins will exit the Australian Open as public enemy number one after roasting a hostile crowd at the Grand Slam and the American said following her defeat on Saturday that it was up to the fans if they wanted to repair their relationship.

Tennis purists felt unsettled as Danielle Collins went right at a rowdy Australian crowd after taking out a hometown favourite in incredible scenes. But the exchange is actually healthy for the sport.

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,