The "Wallabies" is the nickname for the Australian national rugby union team. The side operates under the governance of the Australian Rugby Union (ARU). It has competed in every Rugby World Cup since the competition's inception in 1987 and have won twice; in 1991 and 1999. The Wallabies are currently ranked as third in the International Rugby Board (IRB) World Rankings. They compete annually with South Africa, Argentina and New Zealand in The Rugby Championship (previously called the Tri Nations).