The Championships, Wimbledon, or just Wimbledon, is the oldest tennis tournament in the world. It is the third of the grand slams and it is the only grand slam played on the fast surface of grass. It has been played at the All England Club in Wimbledon since 1877. It is played from late June to early July. The middle Sunday of the tournament is usually a rest day. When it first started, it was only men who played in the tournament. In 1884, women were added to the tournament. Until 1922, the reigning champion only played in the finals against whoever had won through the rest of the players. No British man has won the tournament since Fred Perry in 1936 and no British woman since 1977. Some of the traditions that have stuck are strawberries and cream, royal patronage, strict dress code for competitors and ball kids, and the "rain stops play" call. This can delay matches for hours and hours and possibly even cause the tournament to overrun. A retractable roof will be installed for the 2009 tournament.