Complex sentence: Because NCAA rules require that a conference have twelve members in order to stage a football championship game, it was announced on September 30,2010, that the Big 12 will no longer have a conference championship game, starting with the 2010-2011 football season.
Split into simpler sentences: Because NCAA rules require that a conference have twelve members in order to stage a football championship game. It was announced on September 30,2010, that the Big 12 will no longer have a conference championship game, starting with the 2010-2011 football season.