WIMBLEDON, England -- Andy Murray of Britain returned Sunday to the court where he lost this month's Wimbledon final and won his opening match at the Olympics.

Murray, seeded third, beat Stanislas Wawrinka of Switzerland under the retractable roof on Centre Court, 6-3, 6-3. The roof was closed because of rain, which curtailed play on the 11 other courts.

Murray also beat Wawrinka in the first full match under the roof, played at Wimbledon in 2009. Murray lost the Wimbledon final three weeks ago to Roger Federer.