Overview of the 1990 American Professional Soccer League season. Although the Western Soccer League and the American Soccer League merged to form the American Professional Soccer League in 1990, the two leagues remained essentially independent leagues, linked by name alone. During this season, they ran separate regular season schedules with two different points systems. They each had their own playoff formats, had separate league MVPs and had their own All-League teams. The first game between the two leagues came in September when the Maryland Bays of the American Soccer League defeated the San Francisco Bay Blackhawks of the Western Soccer League for the American Professional Soccer League championship.