The Tri Nations is an annual rugby union competition featuring three national teams: New Zealand, Australia, and South Africa. Established in 1996, it showcases some of the best rugby talent in the Southern Hemisphere. The tournament typically takes place in July and August, with each team playing home and away matches against the others. In 2020, the format evolved into the Rugby Championship, which included Argentina as a fourth team. The competition is known for its intense rivalries and high-level play, making it a highlight in the international rugby calendar.