Al Horford had 19 points, eight assists and seven rebounds for Boston. o on Sunday, on 16 April 1967, professional soccer took its first bold steps in the US as the National Professional Soccer League made its debut. ”But that minimum salary is more than double the minimum from the past year, and it’s well ahead of the wages minor-league baseball players are suing to raise. US Soccer has a new performance director – and he’s the former head of sports science at the Premier League.