LONDON — Marketa Vondrousova received a four-year suspension for refusing an anti-doping test, the International Tennis Integrity Agency announced on Monday. The ban will expire on June 21, 2030, after an independent tribunal issued the decision following a hearing in June 2026.

Vondrousova refused to provide a sample on December 3, 2025, when a Doping Control Officer attempted an out-of-competition test at her home. The test attempt occurred at approximately 8 p.m., at which point Vondrousova signed a refusal form.

The independent tribunal concluded that no compelling justification for the test refusal was offered. Vondrousova stated she reached a breaking point following months of physical and mental stress. She also stated she felt scared when someone rang her door late at night without properly identifying themselves, citing the 2016 attack on Petra Kvitova as a reason for her fear. Vondrousova said experts confirmed she suffered an Acute Stress Reaction and Generalised Anxiety Disorder.

Karen Moorhouse, CEO of the International Tennis Integrity Agency, stated that the starting point for a sanction when a player refuses a test is the same as if they had tested positive. Moorhouse added that unpredictable testing is an essential tool to protect clean sport. The agency stated that testers carry identification and players can verify their identity.

During the ban, Vondrousova is not permitted to play in, coach at, or attend any events organized or sanctioned by the ITF, WTA, ATP, the Grand Slams, or any national association. She can appeal the decision to the Court of Arbitration for Sport. The full written decision from the tribunal will be released later.

Vondrousova, 26, is currently ranked 122nd in the world. She won the Wimbledon women's singles title in 2023, defeating Ons Jabeur in the final. Vondrousova reached a career-high ranking of No. 6 in 2023. She also reached the French Open final in 2019, where she lost to Ash Barty.