In rugby union, the Triple Crown is an honour contested annually by the so-called "Home Nations" – i.e. England, Ireland, Scotland, and Wales who compete within the larger Six Nations Championship. If any one of these teams defeats all three other teams, they win the Triple Crown.
The Six Nations Championship also includes France and Italy, but their involvement in the tournament has no influence on the result of the Triple Crown, although it means that the winners of the Triple Crown are not necessarily the winners of the Championship as a whole.
England won the first Triple Crown – although the phrase was not in use at the time – in the inaugural 1883 series of the original rugby union Home Nations Championship. The latest winners are England, who beat Ireland, Scotland and Wales in the 2016 Six Nations Championship.
Traditionally the Triple Crown was an informal honour with no trophy associated with it. However a trophy now exists, which has been awarded to Triple Crown winners since 2006.
The origins of the name Triple Crown are uncertain. The concept dates to the original Home Nations Championship, predecessor of the Six Nations Championship, when the competition only involved England, Ireland, Scotland and Wales. Like the modern Grand Slam, the Triple Crown was an informal honour to a team that won the Championship with straight victories.
The first use cited in the Oxford English Dictionary is from Whitaker's Almanack, 1900 (referring to the 1899 tournament): "In their last match at Cardiff against Wales, Ireland won by a try to nothing, securing the triple crown with three straight victories as in 1894." The Irish victory in 1894 was reported as a Triple Crown by The Irish Times at the time and is possibly the first time the phrase was seen in print.