What is the Calcutta Cup?

On Christmas Day in 1872, a game of rugby between 20 players representing England on one side and 20 representing Scotland, Ireland and Wales on the other, was played in Calcutta. The match was such a success that it was repeated a week later. These matches led to the formation of the Calcutta Football Club in January 1873. The Calcutta Club joined the Rugby Football Union in 1874, and since then it is called the Calcutta Cup.