Great Britain's Andy Murray has finished the year as the world No.1 ranked male tennis player, following a straight sets win over Serbian Novak Djokovic in the final of the World Tour Finals on Sunday evening.

Murray defeated Djokovic, who has spent 122 weeks at No.1, 6-3, 6-4, to win his first World Tour Finals event.

He becomes the 17th man to hold the world No.1 ranking since the introduction of the ATP rankings in 1973.

โ€œRight now to finish the year like this, this is the best possible way, obviously,โ€ Murray said post match.

โ€œIt was just a huge match to try and finish number one. This is a major event and one I've not done well in in the past, so it's been a great week.

โ€œIt was a big, big match against someone that would be my main rival really throughout my career.

โ€œWe played in all of the Slam finals, Olympics, and now a match to finish the year number one. It was obviously a big match, a very important win for me.โ€