2023 Wimbledon champion Vondroušová has been suspended for four years due to a doping violation

Czech tennis player Marketa Vondroušová received a four-year ban for refusing to undergo a doping test. The decision was issued by an independent tribunal of the International Tennis Integrity Agency (ITIA).

The incident occurred on December 3, 2025, during an out-of-competition control procedure. According to the ITIA, the athlete failed to provide the required sample, after which an official investigation was launched in February 2026.

Vondroušová explained the situation as a result of an acute stress reaction and psychological difficulties. The tennis player stated that fear and intense emotional pressure prevented her from properly assessing the circumstances and acting in accordance with the procedure.

However, the ITIA emphasized that undergoing anti-doping controls is a mandatory part of professional sport and that tennis players may be tested at any time. As a result, the tribunal imposed the maximum sanction — a four-year suspension. The decision may be appealed to the Court of Arbitration for Sport (CAS) by the athlete herself, the ITIA, or the relevant anti-doping organization.

Vondroušová, who became the Wimbledon champion in 2023 and rose to world No. 6 in the rankings, will not be eligible to return to official tournaments before June 21, 2030.

During the suspension, the Czech player is prohibited from competing, training with professional teams, or attending official events held under the auspices of the ITF, WTA, and Grand Slam tournaments.

The last time Vondroušová appeared on court was in January 2026, when she competed in tournaments in Brisbane and Adelaide.