It also refers to the following:
The Triple Crown is also a sporting competition in which the rugby teams of England, Scotland, Wales, and Ireland play against each other from January to March in a series of rugby internationals.1 The unbeaten team, if there is one, wins the Triple Crown. (Note that the Triple Crown will not necessarily be won by anyone, as it requires victories against all the other home countries.) It is played as part of a larger competition known as the Six Nations, which also involves France and Italy. A team that beats all other teams is said to have won the Grand Slam. The loser, i.e., the team with no wins or the lowest number of points, is said to have won the Wooden Spoon.
1 The name may well be due to the existence in the United Kingdom until 1922 of three 'crowns', the former kingdoms of England, Scotland and Ireland. Wales was not a crown, hence the use of triple crown as a title when four nations were actually involved in the competition. Though Ireland as the Irish Free State left the United Kingdom in 1922, and is now the Republic of Ireland, the term is still used.Footnote