Sue Barker is at Wimbledon to host further live coverage of the day's matches, which include the women's singles semi-finals. Maria Sharapova won her first Grand Slam event at Wimbledon as a 17-year-old. It's been an injury-plagued 12 months for the Russian but her display at the French Open, where she reached the quarter-finals, suggests she could be returning to her best and could well still be involved at the semi-final stage at the All England Club.