The North American Soccer League (NASL) is a professional men’s soccer league with ten teams from the United States and Canada competing for the Soccer Bowl. It is a 2nd division league, under Major League Soccer (MLS) and above USL Professional Division (USL Pro).n the NASL players earn a lot less, “only” between $15,000 and $100,000 with most salaries below $40,000. For some players, the six-month season actually serves as only a part-time job.