Andy Murray (picture) upset Australian Open champion Novak Djokovic 7-6 7-6 to win his first Masters Series title on Sunday night.

Murray could have won earlier but Djokovic survived four championship points when the Briton served leading 5-3 in the second set. He clinched it in the tiebreak on his sixth championship point.

Murray overcame the Serb with a fluent and imaginative display of ground strokes, showing he has the ability to climb up among the world's top three, producing his second victory over Djokovic in successive weeks.

Defeat prevented Djokovic, already the winner of three of the four North American Masters Series titles in the last 18 months, from completing the quartet.

Djokovic had also ended soon-to-be world number one Rafael Nadal's 32-match winning streak the evening before in their semi-final.

This time, in the heat of the day it was different.

"I played in these conditions all week so maybe I was more used to it," Murray said.

"My Wimbledon win against (Richard) Gasquet gave me a lot of confidence and this will give me even more."