Former Wimbledon champion Marketa Vondrousova has been banned from professional tennis for four years after refusing a doping test in December 2025, the International Tennis Integrity Agency (ITIA) confirmed on Monday.
Background of the Incident
Late last year, the former world No. 6 took to Instagram, voicing her frustration when a doping control officer (DCO) arrived at her home one evening for an out-of-competition test. Vondrousova, who won Wimbledon in 2023, described the incident as a “serious intrusion into my privacy.”
In April 2026, the Olympic silver medallist released a fresh statement, revealing she had reached “breaking point” and felt “scared” when someone rang her doorbell “late at night without properly identifying themselves or following protocol.” She insisted she had no intention of dodging a test and was simply concerned for her own safety. She also disclosed that medical experts confirmed she had suffered from an Acute Stress Reaction and Generalised Anxiety Disorder.
ITIA Investigation and Ruling
The ITIA subsequently charged Vondrousova with refusing a test. The governing body announced a four-year suspension, stating she provided “no compelling justification” for her refusal. In a statement, the ITIA said: “An independent tribunal has suspended Czech tennis player Marketa Vondrousova for four years for refusing an anti-doping test in December 2025. Vondrousova, who reached a career-high world singles ranking of 6 in September 2023, did not submit a sample when notified by a Doping Control Officer during an out-of-competition test attempt at her home at around 8pm on 3 December 2025. Under anti-doping rules, the starting point for a sanction when a player refuses a test must be the same as if they had tested positive. This is to ensure that anyone who is doping cannot serve a shorter ban simply by refusing to be tested.”
ITIA Chief Executive's Remarks
ITIA chief executive 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. Safety and welfare of players and our testers is really important to us. Our testers are well-trained, professional, and the gender of our testing witness always matches the player. They carry ID at all times, and players are able to verify their identity in other ways if they are ever unsure. 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.”
Tribunal's Decision
Throughout the hearing, Vondrousova explained that stress, poor mental health, and fears for her personal safety had all played a part in her decision. The DCO who attempted to carry out the test also gave their account. Both were considered by the tribunal, which concluded that the evidence presented offered “no compelling justification” for refusing the test. The ban is effective from the date of the decision, sidelining the 2023 Wimbledon champion until 2030.
