Petra Kvitova says she has won ‘biggest fight’ on French Open knife attack return

• Two-time Wimbledon champion suffered serious hand injuries in attack
• Kvitova has recovered quicker than expected from incident in DecemberPetra Kvitova runs strong, lean and recently scarred fingers through her hair, a smile never far from her lips. She has rarely looked so unencumbered by expectation.As a prodigy, then a champion, she has lived with the weight of her talent but, six years after leaving Wimbledon with the first of her two singles titles there, and just five-and-a-h