Markéta Vondroušová, the former Wimbledon champion, was the first unseeded player to win the Wimbledon Women’s singles title in 2023. But on Monday, the International Tennis Integrity Agency (ITIA) announced that Markéta would be banned for 4 years for refusing an anti-doping test in December 2025.

The ban will last until 21st June, 2030. According to the ITIA, the 26-year-old refused to submit to a doping control officer who visited her house for an out-of-competition test on December 3rd, around 8 pm. Apparently, she took her dog for a walk and signed a refusal form.
Some tennis players, usually those ranked in the top 100, are required to provide an update about their whereabouts for one hour every day, 365 days a year. However, the agents can show up unannounced to gather a sample. Though, if the athlete is not there outside the designated window they’re not punished for it.
Karen Moorhouse, the CEO of ITIA during a briefing reiterated the need for surprise testing, “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.”
Vondroušová opened up about her mental health and fear on her Instagram account. She explained that the female agent came to her house outside of the designated time and that she “rang my door late at night without properly identifying themselves or following protocol,” which scared Markéta.
“In that moment it was about feeling safe, not about avoiding anything.”
She spoke about the unfortunate incident involving her compatriot, Petra Kvitova. Kvitova was stabbed during a home invasion in 2016. She stated this incident as a part of her fear.
According to the tribunal, Vondroušová’s explanation and evidence did not offer “no compelling justification” for the test refusal.
Karen Moorhouse further stated, “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 can verify their identity in other ways if they are ever unsure.”
The four-year ban means Vondroušová cannot participate, coach, or attend any event held or sanctioned by the ITF, WTA, ATP, the Grand Slams or national federations until June 21, 2030.
Moorhouse, the CEO of ITIA, acknowledged the significant length of Markéta’s suspension, “We recognise this is a significant ban. And the reason for that, stepping back, is that you can’t have an anti-doping system where a player is in a better place by refusing to take a test than they would by taking a test and testing positive. So that feeds into the structure of the doping rules that provides for a starting point in the four-year ban for refusing to take a test.”
Markéta will be able to appeal in front of the CAS in Switzerland. Jan Exner, her lawyer, told AFP that they would wait to receive the final written verdict before proceeding further.
“Marketa has asked me — and I want to respect her wish — to refrain from commenting on the matter at this stage. Basically, when we get the verdict, we will read the explanation and decide on further action, whether we will appeal it or not, but first I want to consult Marketa and I don’t want to speculate on further steps. I want to respect Marketa’s wish and I don’t want to go into detail.”
Since the suspension, Vondroušová posted a long statement on Instagram, on Monday. Talking about the past seven months of her life and the regret she bears for making the decision.
Markéta wrote, “Waking up every day with uncertainty, fear, and the feeling that you were losing control over your own life is something that is difficult to put into words. It has been an incredibly exhausting and painful period that affected me far more deeply than I could have ever imagined.
“Tennis has been my entire life from the moment I first picked up a racket as a little girl through thousands of training sessions, injuries, comebacks and moments that I could only dream of back then. It gave me everything and I gave everything back to it.”
“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 onto the court with a clear conscience. Just three days after the incident that ultimately changed my life, I was tested again. The result was negative just like every test before it.”
Speaking about her future, she stated she’s unsure what it holds going forward. “Today, I honestly do not know what comes next. For the first time in my life, I do not have a plan. For the first time in my life, I do not know where the road ahead leads.”
