Former US Open champion Emma Raducanu has split with coach Sebastian Sachs, her fifth coach in less than two years.
Sachs joined the Briton's team in December after former coach Dmitry Tursunov warned of "red flags".
Raducanu was forced to miss the French Open and will not return for Wimbledon this year as she recovers from minor surgeries on her ankle and hands.
The 20-year-old has now dropped out of the top 100 in the women's world rankings.
"I have really enjoyed Seb's coaching and working with him, it's unfortunate that circumstances made it unfeasible for both of us to continue right now and we have decided to part ways," Raducanu posted on her Twitter account.