Andy Murray and Novak Djokovic appeared to be a match made in heaven when the duo announced they'd be working together prior to the Australian Open at the start of the year.
Fast-forward to now, however, and the amazing alliance is now over.
It has been confirmed on Tuesday that Murray and Djokovic have gone their separate ways, just weeks before the French Open.
Djokovic took to social media, with the 37-year-old saying: "Thank you, coach Andy, for all the hard work, fun & support over last six months on & off the court.
Andy Murray and Novak Djokovic have split just weeks before the start of the French Open
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"I really enjoyed deepening our friendship together."
And Murray has added: "Thanks to Novak for the unbelievable opportunity to work together, and thanks to his team for all their hard work over the past six months.
"I wish Novak all the best for the rest of the season."
Some tennis fans have already started to wonder why, after just six months together, the pair have decided to part ways.
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According to the BBC, however, it is a 'mutual agreement' - with both tennis legends appearing to still be on good terms.
Their alliance lasted just four competitions, with the Australian Open in January marking their first outing as player and coach.
Djokovic made the semis in Melbourne before withdrawing due to injury, with Jannik Sinner going on to claim glory.
Murray was then present in Miami as Djokovic made the final off that tournament before losing to Jakub Mensik in straight sets.
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They also worked together at competitions in Indian Wells and Madrid.
Djokovic will be hoping to win the upcoming French Open, a tournament he's won three times in previous years.
There is a sense, however, that the tennis legend is starting to wane as he enters the twilight stages of his glittering career.
As for Murray, the Briton is likely to take some time to assess his options - having retired from the sport after the Paris Olympics last summer.
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Speaking at the start of the year, the three-time Grand Slam winner admitted he was 'embarrassed' by the attention he received at the Australian Open.
“I feel like they've been a great team. At times it feels a little bit embarrassing that because of my relationship with Novak, how much people talk about that or when there's a good result or a good performance that it's because I've helped him," he said.
"I'm fully aware that the team that is with him has done an incredible job over many, many years to allow him to still be competing at this level at the age that he's at.
"They've all been really, really helpful to me. They really welcomed me into the team. It's been great to be a part of.
Andy Murray and Novak Djokovic's time together lasted just four tournaments
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"I got to witness some amazing tennis, and one of the best matches that I've seen live against [Carlos] Alcaraz.
"And it's a steep learning curve for me as well."
Djokovic had previously said their time together would be 'indefinite'.
Whether he can respond to the split by winning a record 25th Grand Slam remains to be seen.
