The surprisingly large North American TV audience of over 1 million for the 1966 FIFA World Cup and the resulting documentary film, Goal!, led American sports investors to believe there was an untapped market for the sport in the U.S. and Canada. In 1967, two professional soccer leagues started in the United States: the FIFA-sanctioned United Soccer Association, which consisted of entire European and South American teams brought to the U.S. and given local names, and the unsanctioned National Professional Soccer League. While the USA had FIFA sanction, the foreign teams which were rebranded as American for the summer 1967 season viewed the league as little more than a training exercise for their off-season, and most did not field their best players.