Due to the possibility of rain during Wimbledon, a retractable roof was installed prior to the 2009 Championship. It is designed to close/open in about 20 minutes and will be closed primarily to protect play from inclement (and, if necessary, extremely hot) weather during The Championships. Whilst the roof is being opened or closed, play is suspended. The first time the roof was closed during a Wimbledon Championship match was on Monday 29 June 2009, involving Amélie Mauresmo and Dinara Safina. The first full match played and completed under the roof featured Andy Murray and Stan Wawrinka, played on the same date.