Marketa Vondrousova, the 2023 Wimbledon champion, has been handed a four-year ban after refusing to submit to a doping test, a ruling that has drawn widespread criticism from fellow players. The 26-year-old Czech player was approached at her home by a doping control officer at 8:15 p.m. last December but declined to provide a sample, citing stress and anxiety that affected her decision-making.

An independent panel determined there was “no compelling justification” for Vondrousova’s refusal, prompting the International Tennis Integrity Agency (ITIA) to seek a severe sanction. The ban announced on Monday is among the lengthiest in professional tennis in recent years.

Several players voiced support for Vondrousova, with Australian world No. 98 Ajla Tomljanovic describing the ban as “a disgrace.” Tomljanovic also criticized the sport’s anti-doping authorities, suggesting they are often adversarial. “I wouldn’t be comfortable if I’m living alone and someone comes at eight or whatever,” Tomljanovic said, adding that her positive experiences with testing officers were rare.

Tomljanovic further highlighted perceived inconsistencies in how the ITIA handles doping cases. She pointed to the markedly shorter suspensions received by top-ranked players Jannik Sinner and Iga Swiatek in 2024. Both players tested positive but were deemed to have “no significant fault or negligence,” resulting in suspended bans of three months and one month, respectively.

Vondrousova argued that the testing officer had intruded on her privacy by arriving outside the stated daily window in which she was available for testing. However, she nevertheless signed a document confirming she had refused to provide a sample.

In response, the ITIA emphasized the importance of maintaining a robust and unpredictable testing program to ensure the integrity of the sport. A spokesperson reiterated that all stakeholders desire clean competition, underscoring the necessity of frequent testing.

The ban effectively sidelines Vondrousova from professional competition for four years during what would have been prime years of her career. The case has ignited debate over the demands placed on players by anti-doping protocols and the consistency of sanctions applied across the sport.