The 2023 Wimbledon singles champion Marketa Vondrousova has been suspended from tennis for four years for refusing an anti-doping test. An independent tribunal concluded that there was “no compelling justification” for the 26-year-old Czech to have not submitted a sample when notified by a doping control officer at her home on the night of 3 December 2025.
Details of the Ban
Vondrousova is not allowed to play in, coach at, or attend any events organised or sanctioned by the ITF, WTA, ATP, the Grand Slams, or any national association until 21 June 2030. The ban effectively ends her professional tennis career until she is 31 years old.
ATIA Statement
International Tennis Integrity Agency (ITIA) chief Karen Moorhouse said: “We understand that the testing process is uncomfortable, and acknowledge that it is an additional burden for players whose jobs already come with a high level of pressure and scrutiny, but it is essential to protect fair competition. Unpredictable testing is an essential tool to protect clean sport. The independent tribunal ultimately supported that principle. This case is an important reminder that players can be tested at any time, in any place, and that refusal comes with significant risk.”
Vondrousova's Defense
According to an ITIA statement, Vondrousova, who reached a career-high world singles ranking of 6 in September 2023, claimed during the hearing that “stress and poor mental health had affected her decision making, in addition to concerns for her safety”. The statement continued: “The tribunal considered this in their decision, as well as testimony from the doping control officer who attempted to conduct the test, and concluded that the evidence offered ‘no compelling justification’ for the test refusal.”
Appeal Options
Vondrousova, as well as the ITIA and the national anti-doping organisation, have the right to appeal to the Court of Arbitration for Sport. The case highlights the strict liability players face under anti-doping rules, where refusal to provide a sample is treated as seriously as a positive test.
