Emma Raducanu, who won her first Grand Slam title at the US Open in 2021, she announced Thursday that she and coach Sebastian Sachs have mutually agreed to part ways.

Sachs only began working with Raducanu in December 2022.

Emma Raducanu, right, speaks with her coach Sebastian Sachs during practice ahead of the 2023 Australian Open at Melbourne Park on January 15, 2023 in Melbourne, Australia. (Robert Prange/Getty Images)

Raducanu, who reached number 10 in the WTA circuit rankings in July 2022, he made the announcement on Twitter.

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«I really enjoyed training Seb and working with him, it is unfortunate that circumstances made it unfeasible for both of us to continue at this time and we have decided to part ways,» the tweet read.

«I wish Seb all the best moving forward.»

Earlier this month, Raducanu announced that he would miss the open French and Wimbledon after undergoing a «minor procedure» on both hands and another ankle surgery.

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«Safe to say the last 10 months have been difficult as I dealt with a recurring bone injury in both hands,» he wrote in a message posted to social media on May 3.

Emma Raducanu looks on

Emma Raducanu reacts after winning a point against Serena Williams of the United States during the Western & Southern Open tennis tournament on Tuesday, August 16, 2022, in Mason, Ohio. (AP Photo/Aaron Doster)

«I did the best I could to manage the pain and play through it for most of this year and the end of last year by drastically reducing the practice load, missing weeks of training and shortening the last season to try[and[cure it]unfortunately is not enough «[and[healitunfortunatelyit’snotenough»[y[curarlodesafortunadamentenoessuficiente»[and[healitunfortunatelyit’snotenough»

Raducanu’s coaching history includes Andrew Richardson, who coached her to the women’s title at the 2021 US Open.

He previously teamed with Nigel Sears when he advanced to the fourth round of Wimbledon in 2021 and in November of that year, he began dating Torben Beltz, but their partnership lasted only five months.

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Emma Raducanu talks to her coach Sebastian Sachs

Emma Raducanu, right, speaks with coach Sebastian Sachs during a practice session ahead of the 2023 Australian Open at Melbourne Park on January 15, 2023 in Melbourne, Australia. (Andy Cheung/Getty Images)

Before Sachs joined his team, Raducanu had been coached by Dmitry Tursunov.

This season, Raducanu is 5-5 and hasn’t played since a direct loss she faced Jelena Ostapenko last month in the first round in Stuttgart, Germany.

Associated Press contributed to this report.