Commonwealth Stadium is an open-air, all-seater multipurpose stadium located in the McCauley neighbourhood of the Canadian city of Edmonton, Alberta. Its main tenant is the Edmonton Eskimos of the Canadian Football League (CFL), although it is also used for athletics, soccer and rugby union, as well as concerts. The stadium has a seating capacity of 56,302, making it the largest in Canada. Construction commenced in 1975 and the venue opened ahead of the 1978 Commonwealth Games, replacing the adjacent Clarke Stadium as the Eskimos home. It received a major expansion ahead of the 1983 Summer Universiade, when it reached a capacity of 60,081. The stadium had remained, for a long time, the only CFL venue with natural grass, until FieldTurf Duraspine Pro was installed in 2010.