Virtual XI was created in 1998-02.
London XI was created in 1955.
The Xi Effect was created in 1950.
Sigma Xi was created in 1886.
Police XI was created in 1977.
Theta Xi was created in 1864.
Ebase Xi was created in 2002.
The Totteridge XI was created in 1897.
Si Xi Lin Men Xi Ying Chun was created in 2004-01.
Xi Kappa was created on 1998-02-28.
XI International Brigade was created in 1936.
League of Ireland XI was created in 1938.
Prime Minister's XI was created in 1951.