Paris' most popular sport clubs are the association football club Paris Saint-Germain F.C. and the rugby union club Stade Français. The 80,000-seat Stade de France, built for the 1998 FIFA World Cup, is located just north of Paris in the commune of Saint-Denis. It is used for football, rugby union and track and field athletics. It hosts the French national football team for friendlies and major tournaments qualifiers, annually hosts the French national rugby team's home matches of the Six Nations Championship, and hosts several important matches of the Stade Français rugby team. In addition to Paris Saint-Germain FC, the city has a number of other amateur football clubs: Paris FC, Red Star, RCF Paris and Stade Français Paris.