Simona Halep has announced that her and long-time coach Darren Cahill have decided to "end our working relationship".
The 29-year-old reached world number one and won French Open and Wimbledon titles under Cahill’s tutelage but has now confirmed that their hugely successful six-year partnership is at an end.
Since she began working with the Australian, Halep ended two seasons with the top ranking in the world and reached three Grand Slam finals.
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In her brief statement posted on social media, the Romanian acknowledged the impact Cahill had on her game and as a person.
"After six wonderful years working together, Darren Cahill and I have decided that it’s time to end our working relationship," Halep said on Twitter.
"Thank you D for everything, for making me a better tennis player and a better person."

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Halep is currently ranked at number 11 in the world having endured a spate of injuries in a frustrating 2021.
The Romanian got married to Macedonian businessman Toni Luruc in a high-profile ceremony on September 15 in the city of Constanza.
“It’s a beautiful event and, above all, it’s a very important step for me, I’m happy that all this is happening," she told local media.
Cahill wished the couple well after their wedding in a post on social media: "The official signing today of marriage for Simo and Toni in Romania. Congratulations and big hugs to you both. An amazing couple. Have a great celebration with family and friends tonight."
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