Marketa Vondrousova, the former Wimbledon finalist, appealed to the Court of Arbitration for Sport (CAS) on August 24 against a four-year doping ban imposed by the International Tennis Integrity Agency (ITIA) in June 2026 [1, 2]. The suspension stems from her refusal to take an out-of-competition doping test conducted at her home on December 3, 2025, between 8:00 and 8:15 p.m. [3, 4].
The ITIA ruling bans Vondrousova until June 21, 2030, effectively sidelining her until she is 30 years old [1, 5]. After her suspension and absence from the WTA Tour since January 2026, Vondrousova’s ranking dropped from inside the top 50 to world No. 153 [1, 5].
Vondrousova declined entry to a doping control officer who visited her residence, citing fear and stress related to a previous knife attack on compatriot Petra Kvitova. She said, "In that moment, fear clouded my judgement and I just couldn’t process the situation rationally. After what happened to Petra, we don’t take strangers at our door lightly" [1]. Vondrousova also said, "I had reached a breaking point after months of physical and mental stress. An officer arriving at 8:15 p.m. demanding an immediate test felt like a serious intrusion into my privacy" [3].
Despite the refusal, Vondrousova insists she has never doped and tested negative three days after the incident. She said, "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" [4].
An independent tribunal found she gave "no compelling justification" for refusing the test [1]. The rules require players to log their whereabouts daily to allow out-of-competition testing to be conducted, a system Vondrousova is accused of breaching [1, 2].
American world No. 3 Jessica Pegula criticized the length of the suspension, calling it "so harsh" compared to lighter penalties for other players [1].
CAS has confirmed receipt of Vondrousova’s appeal but has not scheduled a hearing date as of August 25 [4, 5]. The next steps hinge on CAS setting a date to review the case.
