Marketa Vondrousova, the 2023 Wimbledon champion from the Czech Republic, is facing a doping charge for refusing to provide a urine sample during an out-of-competition test in December 2023. The International Tennis Integrity Agency (ITIA) has stated that refusal to submit to testing can carry penalties of up to a four-year ban. Vondrousova, 26, has publicly shared her struggles with mental health, revealing that she felt scared during the incident when an unidentified individual demanded a sample late at night. She drew parallels to the traumatic experience of fellow Czech player Petra Kvitova, who was attacked in her home in 2016, which heightened her fears. Medical professionals have diagnosed her with Acute Stress Reaction and Generalized Anxiety Disorder. The ITIA confirmed that the investigation is ongoing, but Vondrousova has not been suspended at this time.