Tennis: China's Li Na into Wimbledon fourth round

Chinese sixth seed Li Na survived a topsy-turvy match with Czech 32nd seed Klara Zakopalova on Saturday to book her place in the Wimbledon fourth round.

The 2011 French Open champion won 6-4, 0-6, 8-6 to secure a match against Italian 11th seed Roberta Vinci for a place in the quarter-finals.