Eight-time Grand Slam winner Agassi ‌endured a four-year barren spell between winning the 1995 Australian Open and 1999 ‌French Open, during which his ⁠ranking fell ‌to 141st in the world.

The American wrote ​about his battle to regain his form in his autobiography ​in 2009. Briton Raducanu, 23, has not reached the last eight of a ⁠major since ​her shock 2021 US Open triumph.

"I would encourage her to focus on being the best of herself on ‌a daily basis, but don't judge that by results or thinking that somehow you have to be 100%," Agassi told the BBC on Wednesday.

"You have to learn to be 100% of whatever percent you're at (and) be comfortable in your own identity ‌inside of that, not what people ​say."

Japan's Naomi Osaka, who won her ‌fourth Grand Slam in 2021, also took inspiration from Agassi's book last year, when she reached the US Open semi-finals for the first time ⁠in five ⁠years.