Former Wimbledon champion Marketa Vondrousova opened up about her mental health battles, revealing she suffered an Acute Stress Reaction during a doping control incident.

Czech Vondrousova, who won the Wimbledon title in 2023, said the December incident occurred because she had “reached a breaking point after months of physical and mental stress”.

In December, Vondrousova ​described a “serious intrusion into my privacy” from a doping control officer who arrived demanding an immediate ​test.

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“It is very tough for me to talk about this, but I want ⁠to be transparent with you about my mental health,” 26-year-old Vondrousova wrote on Instagram.

“For a long time, ​I’ve been dealing with injury, constant pressure and ongoing sleep issues that left me feeling exhausted and fragile.

“​It slowly wore me down more than I probably realised at the time.

“Years of hateful messages and threats have affected how safe I feel in my own space.

“When someone rang my door late at night without properly identifying themselves ​or following protocol — I reacted as a person who felt scared.

“In that moment, it was about feeling safe, ​not about avoiding anything.”

The International Tennis Integrity Agency (ITIA) said it was aware of Vondrousova’s comments ‌and confirmed ⁠that she was not serving a mandatory provisional suspension.

Marketa Vondrousova. Getty

“We can confirm that an investigation is underway and the player has been charged with refusing a test,” the agency said.

“At this stage, we are not able to comment any further on the specifics.”

Vondrousova has not played a tournament since the Adelaide International in ​January and withdrew from the Australian ​Open citing a shoulder ⁠injury.

She is on the entry list for the Madrid Open starting on Tuesday.

She revealed that experts confirmed she suffered an Acute Stress Reaction and Generalised ​Anxiety Disorder.

“In that moment, fear clouded my judgment and I just couldn’t ​process the situation ⁠rationally,” she said.

Vondrousova referred to twice Wimbledon champion and compatriot Petra Kvitova who suffered severe wounds to her left hand in a struggle with a knife-wielding intruder at her home.

“After what happened to Petra, we don’t ⁠take strangers ​at our door lightly,” Vondrousova added.

“I’m trying to slowly find ​my way back — both on and off the court … I’m still working to clear my name, but at the same time I ​need to take care of myself.”