Sleep expert: Andy Murray’s body clock will be very confused after late finish

Andy Murray won his first two matches in Melbourne (Ng Han Guan/AP)

Andy Murray’s chances of progressing at the Australian Open have been put at a severe disadvantage by his post-4am finish to his match with Thanasi Kokkinakis, according to a sleep expert.

The Scot won the longest match of his career on Thursday, beating the Australian in five hours and 45 minutes in an epic encounter that finally ended at 4.05am.