Finishing second-best to Carlos Alcaraz & Jannik Sinner, Serb has also lost to lesser players recently and needs to step up at Australian Open with Andy Murray in his corner.

The player who left Novak Djokovic stunned at the Brisbane International has argued the all-time great is now at a major disadvantage because of his standing in the game. The Serbian was surprisingly beaten at the quarter-final stage by world No.