Former Wimbledon champion Marketa Vondrousova has appealed to the Court of Arbitration for Sport (Cas) against her four-year ban for refusing an anti-doping test.

The 27-year-old was handed the ban in June after the International Tennis Integrity Agency (ITIA) charged her with denying a doping control officer entry to her home to conduct an out-of-competition test in December 2025.

Her suspension is due to end on 21 June 2030.

Cas confirmed to BBC Sport that it had received the appeal but said a hearing date had not yet been set.

Vondrousova, who in 2023 became the first unseeded player to win the Wimbledon women’s singles title, said in April that when she refused the test she was at “breaking point after months of physical and mental stress”.

The Czech added that she feared for her safety when the officer called at her home at 20:00 on 3 December and said they failed to properly identify themselves or follow “protocol”. She signed a refusal form when she went outside to walk her dog shortly afterwards.

However, a tribunal determined Vondrousova provided “no compelling justification” for refusing the test, nor to receive a shortened ban.

Players are required to log their whereabouts for an allotted hour each day so authorities can conduct anti-doping tests outside of competition.

Vondrousova, a former French Open finalist and Olympic silver medallist, wrote in a statement following her ban: “I have never doped, I have never had a positive test. Throughout my entire career I have undergone countless anti-doping controls and have always stepped on the court with a clear conscience.”

The former world number six hasn’t played since reaching the second round of the Adelaide International in January and has slipped down to 153rd in the WTA rankings.