Evert’s sister, Jeanne Evert Dubin, died from ovarian cancer in 2020 at the age of 62.
Testing later revealed Evert had a pathogenic variant of the BRCA1 gene and following discussions with her doctor, she had a hysterectomy in early December – at which point the cancer was discovered.
She shared in a first-person piece for ESPN earlier this year that a “genetic road map” had helped her detect her cancer early.
Evert won 18 Grand Slam singles titles during her career, reached number one in the WTA rankings, and was inducted into the International Hall of Fame in 1995.
Alongside her greatest rival, Martina Navratilova, she dominated women’s tennis for much of the 1970s and 1980s.
Though the pair were great rivals on the pitch, Navratilova previously credited Evert with supporting her when she was diagnosed with throat and breast cancer in 2022.