Martina Navratilova tells the Independent that defending Wimbledon champion Petra Kvitova has a big upside and room for improvement.
"She just needs to get a little lighter on her feet. It's so easy to think: 'I can just power through this.' Four out of five times you can, but the fifth time it's going to go out," Navratilova said. "On clay that doesn't win and in the wind that doesn't win. When things go your way, great, but when they don't that's when perfect technique and perfect footwork come in handy. I learned new footwork when I was 32, with the cross-step to the outside, so you can retool or improve. Petra doesn't need to retool, but she can definitely improve. She's 22. I was clueless at that age, so she's way ahead of me on that one."