United States Basketball League Tags: Basketball League, Sports League.The United States Basketball League (OTCBB: USBL) often abbreviated to the USBL was a professional men’s spring basketball league. The league was formed in 1985. The final champions are the Kansas Cagerz who won the title game on July 1 2007. thumbnail founding year 1985-01-01T00:00:00+02:00 motto The League of Opportunity team Miami Tropics, Kansas Cagerz, Dodge City Legend, Atlantic City Seagulls title United States Basketball League (USBL) Learn more... Loading...