Police XI was created in 1977.
London XI was created in 1955.
Ebase Xi was created in 2002.
The Totteridge XI was created in 1897.
The Xi Effect was created in 1950.
Theta Xi was created in 1864.
Sigma Xi was created in 1886.
Virtual XI was created in 1998-02.
Si Xi Lin Men Xi Ying Chun was created in 2004-01.
Bau Xi Gallery was created in 1965.
SC Ostbahn XI was created in 1921.
Xi Kappa was created on 1998-02-28.
Upsilon Xi was created on 1962-09-26.