Earlier this week, Qatar Airways announced Novak Djokovic as its latest Global Brand Ambassador. Shortly after the announcement, Djokovic was spotted attending official events ahead of this weekend's Qatar Grand Prix.

Novak Djokovic reveals reasons behind ‘perfect’ Andy Murray appointment - Murray will coach his long-time rival at the Australian Open in January after the pair announced a surprise alliance

Novak Djokovic revealed Andy Murray was caught off guard when asked to be his new coach – but feels the link-up can only be good for tennis. Murray – Britain’s greatest ever player – retired after this summer’s Olympics at the age of 37 after finally admitting defeat in his battle against injury.

Novak Djokovic has taken on Andy Murray as his coach for the Australian Open. It makes sense to put half of the original Big Four in men's tennis together again.

Competing with 'superheroes' gives the Scotsman a unique advantage, Roddick says. Besides, it's loyal friendship.

Murray will coach his long-time rival Novak Djokovic at the Australian Open, but a shock new partnership has deep roots

Andy Roddick made a huge revelation about the Novak Djokovic and Andy Murray partnership as the 2003 US Open champion shares he was told that the newly retired Briton rejected multiple offers from "top male and female" players before accepting the Serb's invitation to work with him.

Novak Djokovic ’s decision to hire Andy Murray has been branded an “act of war”. The former rivals shocked the tennis world over the weekend, announcing that the newly-retired Brit would coach the 24-time Grand Slam champion during the off-season and Australian Open.