LONDON — Marketa Vondrousova, the former Wimbledon champion, has received a four-year suspension for refusing an anti-doping test, marking another significant incident in the world of tennis.
The talented Czech player revealed that she experienced “mental stress” and fear, as the testing agent arrived at her home late at night without proper identification.
The International Tennis Integrity Agency (ITIA) announced the ruling after Vondrousova declined a test in December. Following a hearing this month, an independent tribunal upheld the maximum penalty for a first offense.
Vondrousova made history in 2023 by becoming Wimbledon’s first unseeded female champion, triumphing over Ons Jabeur in the final. She achieved a career-high ranking of No. 6 that same year and had previously reached the French Open final in 2019, where she faced Ash Barty.
In an emotional Instagram post from April, the 26-year-old expressed her feelings regarding the incident. “Talking about this is incredibly tough, but I want to be open about my mental health,” she stated. “The doping control incident occurred amid overwhelming physical and mental pressures that led me to a breaking point.”
The ITIA clarified that Vondrousova “did not provide a sample when approached by a Doping Control Officer during an out-of-competition test at her residence at around 8 p.m. on December 3, 2025,” and instead opted to sign a refusal form.
“I have never engaged in doping or tested positive,” Vondrousova stated following the tribunal’s decision. “Throughout my career, I’ve faced numerous anti-doping assessments and always played with a clear conscience. Just three days after the incident, I underwent another test, and the results were negative—just like every test before it.”
Her legal representation, attorney Howard Jacobs from Los Angeles, specializes in doping cases. Jacobs previously supported two-time Grand Slam champion Simona Halep in successfully appealing a four-year ban in 2024 at the Court of Arbitration for Sport.
Vondrousova now joins the ranks of other high-profile tennis figures embroiled in doping issues, including Halep, Jannik Sinner, and Iga Swiatek.
Sinner accepted a three-month ban as part of a settlement with the World Anti-Doping Agency last year, while Swiatek acknowledged a one-month suspension at the end of 2024.
Each of these athletes demonstrated that they weren’t entirely accountable for their positive tests.
“We understand the significance of this ban,” said ITIA CEO Karen Moorhouse. “The anti-doping system must ensure that a player does not benefit from refusing to take a test rather than facing a positive outcome. This principle supports the foundation of doping regulations that impose a standard four-year ban for test refusals.”
Vondrousova’s suspension is set to conclude on June 21, 2030, and she has the option to appeal to the Court of Arbitration for Sport in Switzerland.
During the tribunal hearing, Vondrousova described how stress and poor mental health influenced her decision, alongside her concerns for safety, as the tester failed to properly identify themselves.
Despite her explanation, the tribunal heard from the doping control officer and concluded that there was “no compelling justification” for her refusal to comply with the test.
Under anti-doping regulations, athletes must inform authorities where they will be available for testing during a designated hour each day.
The testing agent arrived unexpectedly at Vondrousova’s home outside the scheduled time, and while athletes should be prepared for surprise tests, they face no penalties if unlocated during assigned hours.
“Surprise testing is crucial for maintaining clean sports,” Moorhouse commented. “This case serves as a potent reminder that players are subject to testing at any time, and refusing to comply carries serious consequences.”
The ITIA did not disclose whether any discrepancies were found in Vondrousova’s anti-doping history.
“We do not disclose such information,” noted Nicole Sapstead, the ITIA’s senior director of anti-doping, adding: “We examine all relevant factors.”
Currently ranked 122, Vondrousova has not participated in any matches since January.
With Wimbledon approaching next week, the tennis community watches closely.
