After antagonizing the Australian Open crowd during and after her second-round match, Danielle Collins received a cold welcome from the fans as she took the court for her third-round matchup with Madison Keys.

For the first time in her professional tennis career, Emma Navarro has advanced to the fourth round of the Australian Open. For the third match in a row at this

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,