Nick Kyrgios believes Jannik Sinner is going to prove "unstoppable" - and the new Australian Open champ has told the injured Aussie he will be back too.
Italian Jannik Sinner has come from two sets down to beat Russian Daniil Medvedev in an epic Australian Open final to claim his maiden grand slam title.
Italian Jannik Sinner has snapped the 33-match Melbourne Park winning streak of 10-time champion Novak Djokovic to surge into his first Australian Open final.
