8 The 76th-ranked Swiss took the biggest upset victory of her career, defeating four-time Grand Slam champion Osaka by 3-6, 6-3, 6-3 at the final major US Open tuneup tournament
Osaka had said then she would boycott news conferences to raise awareness of players' mental well-being, but she did speak to reporters after the defeat by Vondrousova.
"We didn't expect for this to happen, Bartoli told ITV Sport during her role as a pundit on Friday. "We didn't think the situation was so bad with Naomi. I think the WTA is trying really hard to find some solution.
One of the biggest names in sport, Osaka stunned the tennis world when she pulled out of the Grand Slam on Monday after being fined and threatened with expulsion for declining to face the media after her first-round match on Sunday.
Daria Abramowicz, who is in Paris to assist the 19-year-old Swiatek at the French Open which starts on Sunday, told Reuters that the demands on players affect their mental health and well-being.
"I absolutely understand the (Osaka's) decision in terms of when a player loses a match, and tennis is such a specific sport because at the end of the tournament only one person does not lose," Abramowicz said.