US Open champion Emma Raducanu has split with German coach Torben Beltz after working with him for five months, the BBC reported on Tuesday.
Raducanu appointed Beltz as her coach in November after she had parted ways with Andrew Richardson following her surprise triumph at Flushing Meadows, where she became the first qualifier to win a Grand Slam.
The 19-year-old said she needed "a new training model" and that Britain's Lawn Tennis Association (LTA) would support her in the interim.
"I want to thank Torben for his coaching, professionalism and dedication over the last half a year," the BBC quoted her as saying in a statement.
"He has a huge heart and I have enjoyed our strong chemistry during the time together.
"I feel the best direction for my development is to transition to a new training model with the LTA supporting in the interim."
Reuters has requested comment from Raducanu and the LTA.
Raducanu, ranked 11th in the world, lost to world number one Iga Swiatek in the quarter-finals of the Stuttgart Open last week.
Carlos Alcaraz will miss the Madrid Open for the second consecutive year after withdrawing on Friday with a wrist injury, dealing another blow to the world number two's clay court preparations ahead of his French Open title defence.
Novak Djokovic is still working through the injury problems that forced him to miss recent tournaments in Miami and Monte Carlo and said on Friday that he will not feature at next week's Madrid Open, one of the last stops before the French Open.
Mumbai Indians head coach Mahela Jayawardene has defended Jasprit Bumrah after the struggling pace spearhead went a fifth Indian Premier League match without a wicket in Thursday's seven-wicket defeat by Punjab Kings.
Iranian women's football players Fatemeh Pasandideh and Atefeh Ramezanisadeh thanked the Australian government on Friday for offering a "safe haven" and said they wished to resume their sporting careers after rebuilding their lives.
Ollie Watkins still has hope of making England's World Cup squad despite being dropped for last month's friendlies against Uruguay and Japan, with the Aston Villa forward saying all he can do in the last few weeks of the season is score goals.
Dubai Police, in collaboration with the UAE Ministry of Interior, have arrested an Irish fugitive accused of involvement in an organised criminal group linked to international crimes in his home country.
UAE President His Highness Sheikh Mohamed bin Zayed Al Nahyan has met with His Highness Sheikh Hamad bin Mohammed Al Sharqi, Supreme Council Member and Ruler of Fujairah, to discuss national priorities and the country’s continued development.