Former world number one Andy Murray’s recent reign as the coach of Serbia’s legendary tennis star came to an end on Tuesday, after just six months. The development was confirmed by both individuals in posts on social media platform X — previously known as Twitter.

Novak Djokovic caught the tennis world unawares when he announced that his new coach would also be one of his greatest rivals: Sir Andy Murray.

Novak Djokovic and coach Andy Murray ended their partnership after six months, they said Tuesday. Djokovic announced in November that he hired Murray. The 24-time Grand Slam winner was ranked No. 7 in the world at the time.