Why did Novak Djokovic refuse on-court interview after Australian Open match?

Novak Djokovic refused a customary on-court interview after beating Jiri Lehecka in the Australian Open 2025 on Sunday. He clarified he was protesting against the tournament's host broadcaster Nine Network's reporter Tony Jones for making a "mockery of Serbian fans". Jones, standing in front of Djokovic's fans last week, sang, "Novak, he's overrated...Novak's a has-been...Novak, kick him out."