Uzbekistan’s Denis Istomin stunned second seed and World No 2 Novak Djkoovic to move into the 3rd round of the Australian Open.

Istomin matched Djokovic shot for shot to win 7-6, 5-7 2-6, 7-6, 6-4 in a 4-and-a-half-hour contest at the Rod Laver Arena on Thursday.