Czech tennis player Markéta Vondroušová has been handed a four-year ban from competition after refusing to submit to a doping control test in December 2025. The announcement was made by relevant anti-doping authorities. Vondroušová’s refusal constitutes a violation of anti-doping regulations. The length of the suspension effectively sidelines the athlete for a significant period, potentially impacting her career. Details regarding the specific circumstances surrounding the attempted test and potential appeals were not immediately available. This decision underscores the strict enforcement of anti-doping rules within the sport. Further information is expected as the case develops.