Dan Evans raises concerns about Emma Raducanu's new coach and makes sack prediction

has raised concerns about 's coaching partnership with Mark Petchey, which he is not convinced will last. Raducanu started working with Petchey during the Miami Open, where she reached the quarter-finals before losing to . It saw the young Brit move back into the world's top 50 for the first time in three years.

Both parties have made it clear that it will continue to be an informal partnership due to Petchey's other commitments. He also works as a tennis commentator, meaning he will be unable to mentor Raducanu at every tournament. Jane O'Donoghue is expected to step in when Petchey is not available.

Quizzed on Raducanu's new coaching setup, Evans suggested that it could get complicated if Raducanu starts to lose matches. He believes Petchey could be ditched by the end of the year and possibly ahead of the US Open in September.

"It can't last if she starts losing matches and Petchey is in the commentary box, that's not going to work," Evans told BBC Radio 5 Live.

"I think Emma will be looking for a new coach again pretty soon if she starts to lose some matches on the grass into the US swing. I'm not sure how that can last as it is."

Petchey and O'Donoghue have travelled to Rome ahead of the Italian Open, where Raducanu will be seeking a return to winning ways. O'Donoghue is also a short-term solution, given that she will return to her job in finance next year.

Raducanu has insisted that she is happy with the way things are going at the moment, saying: "It's been working pretty well. Mark is doing his commentary work and around that he is going to help me as much as he can.

"Hopefully the times align that he can be there with me in the matches. That's why Jane is here for when he's not able to make it to the session.

"While she's not working it's nice to have her as much as possible, but she will go back to work and then I need to figure another solution out. I just need to work on who that person is.

"I want to use this period of the clay season to try and work on certain things in my game that I think are going to help me bridge the gap to the next level.

"I want to take more balls on, I want to be more aggressive in certain points, I want to structure the points more on my terms. I know I may make more errors doing that, but I'm willing to go through that."