Fired-up Djokovic sends Melbourne warning, Osaka bows out injured

Serbia’s Novak Djokovic reacts on a point against USA’s Nishesh Basavareddy. —AFP/FileMELBOURNE: A “very hot-headed” Novak Djokovic produced a vintage display to join Carlos Alcaraz and Alexander Zverev in the Australian Open last 16 on Friday, but Naomi Osaka´s bid for a…