Novak Djokovic says 'there was not much I could do' after shock defeat

• Djokovic beaten by world No117 Denis Istomin at Australian Open • 'I was not pleased with my performance overall,' says world No2 Professional rigour demands Andy Murray must not allow his hopes of winning the Australian Open for the first time to rise after Novak Djokovic's shock defeat but there can be little doubt the player who recently deposed the Serb as the world No1 is now the outright favourite. Related: Novak Djokovic stunned as Australian Open title defence ends against Denis Is...