In a rollercoaster match lasting nearly five hours the Serbian top seed, trailing two sets to one, stormed back to win 6-3, 3-6, 6-7 (4/7), 6-1, 7-5 to set up a title match with Rafael Nadal.

"There's not any words that can describe the feeling I have now," Djokovic said. "Andy deserves the credit to come back into the match after 2-5 down. He was fighting, I was fighting."

Djokovic now gets a shot at his third Australian Open title while Murray's quest for Britain's first male grand slam title in 76 years goes on.

Djokovic, who enjoyed a stellar season in 2011, winning 10 titles including the Australian Open, Wimbledon and the US Open, drew first blood on Rod Laver Arena, breaking in the fourth game when the Scot double-faulted.

He took the opening set and broke again early in the second but Murray cut out the errors and began to dictate the points, levelling the match and taking the third set on a

tie-break.

But there was a sudden momentum shift at the start of the fourth set as errors crept back into Murray's game and Djokovic raced through the gears to take it 6-1 in just 25 minutes.

He made a crucial break in the sixth game of the final set and although Murray broke back, he won the match by breaking the Scot in the 12th game.