“First, she had this mental health issue, and then she had a baby. So she’s been out, and then she restarted the year this season and it was not a very good season.

“Before the first tournament we did together she was 80 in the world and she knows she can do much more than that.

“She’s extremely motivated to come back and win Grand Slams, and it’s a pleasure for me because that’s the dream of every coach: to have a player who has that level of motivation.”

‘I don’t want to have any regrets’

The 26-year-old split with Wim Fisette, who she won two of her four Grand Slam titles with, earlier in September.
Osaka said she was initially hesitant about working with Mouratoglou.

“The fact that he was Serena’s coach made me want to avoid him just because his persona is so big,” Osaka said.

“This isn’t rude because I found out it’s not true, but I didn’t know if he was a good coach or he coached Serena.

“Then I met him, talked to him, worked with him on the court. He absolutely is a really good coach.”

Mouratoglou has been working with Osaka for just over a month and she believes she is at a stage in her life where she does not want to have any regrets.

Mouratoglou sees their relationship as having a good base, with Osaka having approached him first.

“Naomi came to me. I never come to players. I don’t do that. I think it’s weird. I think to work well it’s very important that a player expresses the motivation to work with you,” Mouratoglou said.

“Then there is an extremely good base to start something very solid.

“When a coach goes to a player to say, ‘I would like to work with you’, I don’t think it puts him in a good position to work well.”

‘I don’t feel like I’m in my body’

The 2018 and 2020 US Open champion has failed to go beyond the quarter-finals at any tournament this season.

Osaka revealed she had “suffered long bouts of depression” after withdrawing from the French Open in 2021 and opting not to compete at Wimbledon, although she did contest the Tokyo Olympics in her native Japan.

She likened her loss in qualifying for the Cincinnati Open in August to “being postpartum”, adding in an emotional post on Instagram that the feeling “scares” her.

“I’ve been trying to figure out how I feel for the past several hours,” Osaka wrote. “In a weird way I’ve come to appreciate losses. You don’t play tennis for 20-plus years without your fair share of them.

“My biggest issue currently isn’t losses though. My biggest issue is that I don’t feel like I’m in my body. It’s a strange feeling, missing balls I shouldn’t miss, hitting balls softer than I remember I used to.

“I try and tell myself, ‘it’s fine, you’re doing great, just get through this one and keep pushing’. Mentally it’s really draining though. Internally I hear myself screaming, ‘what the hell is happening?!?!'”

She added: “I’ve played a handful of matches this year that I felt like I was myself and I know this moment is probably just a small phase from all the new transitions (clay, grass, clay, hard etc). However, the only feeling I could liken how I feel right now to is being postpartum.

“That scares me because I’ve been playing tennis since I was three. The tennis racquet should feel like an extension of my hand.

“I don’t understand why everything has to feel almost brand new again. This should be as simple as breathing to me but it’s not, and I genuinely did not give myself grace for that fact until just now.”