Markéta Vondroušová appeals four-year doping ban to CAS over missed 2025 test

Appeal filed with the Court of Arbitration for Sport

Former Wimbledon champion Markéta Vondroušová has lodged an official appeal with the Court of Arbitration for Sport against her four-year suspension from professional tennis. The Court of Arbitration for Sport confirmed the receipt of the filing on 25 August 2026, noting that a date for the arbitration hearing has not yet been scheduled. The disciplinary sanction was imposed following proceedings initiated by the International Tennis Integrity Agency after she refused an out-of-competition doping test. Under the terms of the ruling, the 27-year-old Czech player is barred from playing, training, or attending any event organized or authorized by the International Tennis Federation, the WTA, the ATP, the Grand Slam tournaments, or any national tennis federation. The four-year ban is scheduled to remain in effect until 21 June 2030, at which point Vondroušová will be 30 years old. Her legal counsel, Howard Jacobs, confirmed the decision to contest the ruling before the Lausanne-based tribunal.

The December 2025 testing incident

The integrity case centres on an unannounced visit to Vondroušová's residence on the evening of 3 December 2025. A doping control officer arrived at her home between 20:00 and 20:15 to collect an out-of-competition biological sample outside of her designated one-hour whereabouts testing slot. Vondroušová refused the officer entry, maintaining that the tester failed to adhere to standard protocol or provide proper identification upon arrival in the dark. Shortly after the initial interaction, Vondroušová exited her house to walk her dog and signed a formal refusal form provided by the official. She subsequently submitted to a doping test three days later, which returned a negative result for prohibited substances.

Defense arguments and tribunal ruling

The International Tennis Integrity Agency formally charged Vondroušová in February 2026 with refusing a test. In an April 2026 public statement, Vondroušová stated that months of physical and mental fatigue had brought her to a breaking point, leaving her frightened by the nighttime arrival.

Experts confirmed I suffered an Acute Stress Reaction (F43.O) and Generalized Anxiety Disorder (F41.1). In that moment, fear clouded my judgment and i just couldn't process the situation rationally.

During an independent tribunal hearing on 11 June 2026, Vondroušová presented clinical documentation regarding her diagnosed acute anxiety and generalized anxiety disorder. She also cited persistent security fears shared by Czech players following the home attack on two-time Wimbledon champion Petra Kvitová ten years earlier. However, the tribunal concluded that the medical evidence and safety arguments provided no compelling justification for refusing the test. The panel endorsed the integrity agency's recommendation and imposed the maximum standard sanction of four years, issuing its full decision in July 2026.

Career achievements and rankings impact

The four-year sanction removed Vondroušová from competition just as she appeared on the entry list for the 2026 Wimbledon tournament. In 2023, she became the first unseeded woman to win the singles championship at Wimbledon, building on earlier career milestones that included reaching the 2019 French Open final and capturing a silver medal at the Tokyo Olympics in 2021. The former world number six has been sidelined from tournament tennis since January 2026, when an ongoing shoulder injury forced her withdrawal from the Adelaide International. That prolonged inactivity caused her position in the WTA rankings to fall to world number 153. If the Court of Arbitration for Sport rejects her appeal, Vondroušová will be unable to resume competitive tennis until mid-2030.