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.

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.

Novak Djokovic declared himself a big fan of Danielle Collins’ approach to rowdy Australian Open fans after confronting his own heckler at Melbourne Park. Collins made a big show of taunting the crowd after her late-night victory over home hope Destanee Aiava on Thursday,