Major League SoccerWomen's United Soccer AssociationNational Professional Soccer League (1967)United Soccer Association (1967)North American Soccer League (1968-84)A-League (American? Sanctioned by FIFA. Originally called the North American Soccer League, it became the USA to avoid being confused with the National Professional Soccer League. Instead of recruiting? The American Professional Soccer League was formed in 1990 with the merger of the Western Soccer League and the New American Soccer League. The APSL was officially sanctioned as an outdoor?