Petra Kvitova
Petra Kvitova has suffered an injury to her left hand Lintao Zhang/Getty Images

Female tennis star Petra Kvitova claims she is lucky to be alive after being subjected to a knife attack in her own home. The world number 11, Wimbledon female singles champion in 2011 and 2014, sustained a serious left hand injury during an apparent burglary in Prostejov, eastern Czech Republic.

Updating fans on her condition via Twitter, Kvitova said: "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. 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 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." Spokesman Karel Tejkal added: "It was a random criminal act. She was assaulted in her apartment and is in the care of doctors, but her injuries are not life-threatening."

Earlier on Tuesday (20 December), Kvitova – who plays left-handed – pulled out of next month's Hopman Cup tournament in Australia as she continues to recover from a stress fracture in her right foot.