Two-time Wimbledon champion Petra Kvitova has been attacked with a knife and robbed in her home in Prostejove, Czech Republic, her publicist Karel Tejkal has said.
The 26-year-old injured her racket-holding left hand in the assault, which saw 5,000 Czech Koruna (around €185) stolen, according to sport.cz.
Tejkal said it was not a targeted attack.
He told sport.cz: "It is apparently a random criminal act, Petra is now in the care of doctors."
Kvitova has now gone to Brno Trauma Hospital for assessment of her injuries, which are not thought to be life threatening.
Earlier on Tuesday Kvitova announced on Twitter she would be missing January's Hopman Cup in Perth, Australia as she continues to recover from a foot injury.
Kvitova has two grand slam titles, winning Wimbledon in 2011 and 2014.
She has two WTA singles titles in 2016 and a career total of 19, with career prize money of more than US dollars 22.8million (around €21.5m).
She is currently ranked 11th in the world.
Thank you for all your messages. As you may have already heard, today I was attacked in my apartment by an individual with a knife— Petra Kvitova (@Petra_Kvitova) December 20, 2016
In my attempt to defend myself, I was badly injured on my left hand. I am shaken, but fortunate to be alive. The injury is severe and I will— Petra Kvitova (@Petra_Kvitova) December 20, 2016
need to see specialists, but if you know anything about me I am strong and I will fight this. Thank you all again for your love and support— Petra Kvitova (@Petra_Kvitova) December 20, 2016
Kvitova has commented about the incident on Twitter, saying she is "badly shaken" and "fortunate to be alive" after a knife attack in her apartment.
She thanked followers for their concern and she would fight to recover from the injury.