Chris Evert announced she has completed a course of chemotherapy treatment after the American tennis great was diagnosed with ovarian cancer.

The 67-year-old American, whose on-court battles with Martina Navratilova in the 1970s and 1980s provided one of the greatest tennis rivalries, won 18 grand slam singles titles.

Only Steffi Graf and Serena Williams have won more in the Open Era, with Evert finishing her career on the same number as Navratilova.

Evert revealed she had cancer ahead of the Australian Open in January, with it being discovered after a preventive hysterectomy.

She explained at the time it had been found at an early stage, saying she was "very lucky" in that respect. Evert's sister Jeanne died from ovarian cancer in February 2020.

In an update, Evert wrote on Twitter: "I'm a little out of it (meds) but nonetheless, thankful and relieved I finished my 6 chemo treatments."

She posted a video showing her bidding an emotional goodbye to oncology staff at Cleveland Clinic.

Fellow US tennis star Pam Shriver replied: "Happy tears in Los Angeles! Congratulations"