Panichi is the former long-time trainer of Novak Djokovic and also worked with compatriot Jannik Sinner until shortly before the start of this year’s Wimbledon.

Before coaching, he was a professional athlete who won two national junior titles in long jump.

Speaking about his latest team member during an interview with Ziggo Sport, 22-year-old Rune admits he went through a ‘very challenging fitness training’ stint with Panichi during a recent trial that took place. However, there are also positives to be drawn from that experience.

“I tried a few days with Marco down in Monaco and for me it was very, very challenging fitness training with him. It was not only about getting stronger, lifting weights, because that’s not what tennis is about,” said Rune.

“Obviously you need a certain strength, but there’s a lot about the coordination, the biomechanics, and I think he challenged me in a different way that I haven’t tried before.”

Elaborating further, Rune admits the resume of his new trainer also appealed to him.

“His experience working so many years with Novak and a little time with Sinner, I really see the connection of fitness and tennis,” he continued.

“I think he has a spectacular talent for that. So I’m very excited to work with him.”

The Dane has previously spoken about his fitness concerns. After getting knocked out of the French Open in May, Rune admitted he will never see what his full potential is in the sport if he doesn’t get himself completely physically fit.

Rune returns to action this week in Toronto, where he is seeded fifth in the draw. It will be his first tournament since Wimbledon after skipping Washington due to a back issue.