PRAGUE (AP):Two-time Wimbledon champion Petra Kvitova was injured by a knife-wielding attacker at her home yesterday.The 2011 and 2014 Wimbledon champion said the injury to her left hand was “severe”.”In my attempt to defend myself, I was badly injured on my left hand. I am shaken, but fortunate to be alive,” Kvitova, who is left-handed, wrote on Twitter. “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.”It was not immediately clear how the injury could affect Kvitova’s play.”What happened to me was certainly not pleasant, but it’s behind me,” Kvitova said in an earlier statement on the Facebook page of the Czech Republic’s Fed Cup team. “I have the best possible care and I’m in touch with my loved ones. The worst is behind me.”Kvitova’s spokesman, Karel Tejkal, said the incident, which he described as a burglary, occurred yesterday morning in the eastern Czech town of Prostejov.ATTACKER AT LARGEProstejov police spokesman Frantisek Korinek said the attacker, a man who is about 35 years old, escaped from the scene and was at large. He said police have launched a manhunt.Kvitova was scheduled to participate in a charity event in the city of Brno yesterday with another Czech player, Lucie Safarova.”It’s horrible,” Safarova told Czech public radio. “Things like that are shocking to all of us. It can happen to anyone of us. That’s really terrible.”In April 1993, Monica Seles was at the height of her success when she was stabbed in the back during a changeover at a tournament in Hamburg. A man reached over a courtside railing and knifed her, leaving an inch-deep slit between her shoulder blades.Seles returned to the game 27 months later and reached the 1995 US Open final.In an unrelated move earlier yesterday, Kvitova withdrew from the Czech Republic team at next month’s Hopman Cup mixed-team tennis tournament because of an earlier foot injury.