All these sports are American inventions and have developed wide support in schools,amateur and professional leagues.
VOA: special.2010.06.02
The SocZ will partner with the head of the non-profit Chinese Football Association, which oversees Chinese soccer, including amateurandprofessionalleagues.
The basic principle of the system is to transfer teams between divisions based on merit -- in order to allow fluidity between the amateurleaguesand the very top of the professional game.