Petra Kvitová reaches semi-finals at Wimbledon

The Czech tennis player Petra Kvitová has sensationally reached the semi-finals at Wimbledon. Kvitová, who is 20, had already caused one upset by knocking out fourth seed Caroline Wozniacki to reach the last eight at a Grand Slam tournament for the first time in her career. On Tuesday afternoon she went one better, returning five match balls on her way to a 4-6 7-6 8-6 victory over Kaia Kanepi of Estonia. On Wednesday Tomáš Berdych will play Roger Federer in the men’s quarter-finals, after overcoming the German player Daniel Brands. The Czech number one recently got to the semi-finals at the French Open, his greatest success to date at a Grand Slam tournament.