World Indoor Football League ended in 1988.
World Indoor Soccer League was created in 1998.
World Football League was created in 1974.
World League of American Football was created in 1991.
World Indoor Soccer League ended in 2001.
World Indoor Lacrosse Championship was created in 2003.
World Football League ended in 1975.
IAAF World Indoor Championships in Athletics was created in 1985.
World League of American Football ended in 1992.
The National Football League
World Football Challenge was created in 2009.
Kiko World Football was created in 1998.