Andy Murray believes that a victory over Novak Djokovic in the final of the Australian Open would be classed as an upset.

The 27-year-old is bidding to win the third Grand Slam title of his career, and the first in the competition when he faces the world number one later today.

However, the Scot has played down his chances of winning due to his poor record against Djokovic in Melbourne, where he has lost three times to the Serb, including twice in the final in 2011 and 2013.

"I've never won against him here before [in Melbourne]," Murray told BBC Sport.

"I've lost to him each time that we've played. I think I've lost to him the last four or five times we played against each other, as well.

"I've maybe only won one set in those matches. It would be a big turnaround. I'm not saying it's not a possibility, but it's going to be very, very tough."

Murray's last Grand Slam triumph came at Wimbledon in 2013.