The 28-year-old testified at the trial of Radim Zondra, who has pleaded not guilty to attacking the Czech player with a knife.

Kvitová attended a hearing in Brno but testified via video link from a different room so she did not have to enter the courtroom with Zondra.

She said a knife was held to her throat from behind after a man had entered her house claiming that he was there to check the boiler.

After a struggle Kvitová suffered severe injuries to her left playing hand which required four hours of surgery.

"I was screaming, of course," she told the court.

"There was blood all over the place."

Kvitová said she offered her attacker CZK10,000 (£340/$440/€390) which he accepted before leaving.

Zondra faces 12 years in jail if found guilty and is already in prison for another crime.

Czech television broadcast Kvitová's testimony with the tennis player one of the country's biggest sporting stars.

The two-time Wimbledon champion and Rio 2016 Olympic bronze medallist was out of action for five months after the attack.

Since returning to the court she has battle back to number two in the world, her previous highest position.

She reached a Grand Slam final last month at the Australian Open, losing to Japan's Naomi Osaka.

Last year, she helped the Czech Republic win the Fed Cup - claiming the women's team title for the sixth time in her career.

The court proceedings continue.