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.

Novak Djokovic called Danielle Collins' feisty reaction to Australian Open hecklers "funny" and "smart" after himself getting riled up during his third-round win on Friday.

MELBOURNE, Australia — 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, including Friday night at Rod Laver Arena.