LONDON - Hail and heavy rain caused chaos at the Olympic tennis at Wimbledon Sunday as play was forced indoors for the first time in 100 years. Andy Murray and Maria Sharapova were among just a handful of winners under the Centre Court roof, which was hastily closed after a cloudburst as play was about to get under way.

Out of a schedule of 43 matches, only three results were possible by 6:00 pm (1700 GMT). Olympic tennis had not been played indoors since Stockholm 1912. Despite the disruption, Murray and Sharapova both enjoyed the first Olympic wins of their careers. The Scot beat Swiss flag-bearer Stanislas Wawrinka 6-3, 6-3, while French Open champion Sharapova thrashed Israel's Shahar Peer 6-2, 6-0.

It was a cathartic victory for Murray, who was back on Centre Court for the first time since crying tears of frustration after his Wimbledon defeat against Roger Federer exactly three weeks ago. The 25-year-old, who had hoped to become the first British man to win Wimbledon since Fred Perry in 1936, brushed aside Federer's compatriot to set up a last-32 clash with Finland's Jarkko Nieminen or India's Somdev Devvarman. For Sharapova, beating Peer meant more than just a place in the last 32 as the Russian finally got to savour a taste of the Olympic experience -- as she chases a career "Golden Slam" of all four grand slam titles and Games gold.

 Meanwhile, world number two Agnieszka Radwanska endured more Centre Court woe as the Polish second seed was beaten 7-5, 6-7 (5/7), 6-4 by Germany's Julia Goerges, less than a month after her Wimbledon final defeat to Serena Williams.