Coco Gauff says she had depression because of the "pressure that she needed to do well" little more than a year before she stunned the tennis world at Wimbledon in 2019.
American Gauff, then 15, reached the last 16 at the All England Club, most notably defeating five-time champion Venus Williams in the first round.
But she says she struggled with a "dark mindset" for a year around 2017-18.
"I was struggling to figure out if this was really what I wanted," Gauff said.
In a piece for Behind the Racquet, the 16-year-old added: “I always had the results so that wasn’t the issue, I just found myself not enjoying what I loved.