Tags: Basketball League, Sports League.
This article is about the original National Professional Basketball League. See National Professional Basketball League (2007–2008) for information on an unrelated league.National Professional Basketball League was a pro basketball league in the USA (1950-1951). Sheboygan Anderson and Waterloo all had been members of the NBL or NBA prior to joining the NPBL. The league played just one season with no championship finals ever being staged.