On a trip to Argentina to play in a farewell match for Juan Martín del Potro, Novak Djokovic explained why he hired former rival Andy Murray after being without a coach for six months.

Andy Murray ’s decision to become Novak Djokovic ’s coach rocked the tennis world. The Brit only retired four months ago and is now stepping up to mentor arguably his biggest rival. Even one of Murray’s ex-coaches, Mark Petchey, was “surprised” by the news.

Novak and Andy fought for the year-end no. 1 honor in 2016 until the final match. Murray defeated Djokovic in the ATP Finals title clash, securing his only year-end no. 1 season. Both players entered the ATP 250 event in Doha at the beginning of 2017 and reached the final.

Djokovic announced this past week that Murray would join his team as a coach at least through the 2025 Australian Open.

Novak Djokovic surprised the entire tennis world when he announced his great rival, Andy Murray, as his coach for 2025! As he admitted, Novak also surprised himself, although he had a clear vision while picking his next coach. Djokovic parted ways with Goran Ivanisevic in April.

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.

Murray will coach his long-time rival at the Australian Open in January after the pair announced a surprise alliance

Djokovic split with his coach after six years earlier this summer, and he's counting on Andy Murray to help him prepare for the Australian Open.

Novak Djokovic announced that Andy Murray will be his coach for the offseason and Australian Open in a post to social media on Saturday.

Recently retired Andy Murray will team up with Novak Djokovic, working with him as a coach through the Australian Open in January.