The Sheboygan Red Skins and Waterloo Hawks both claimed the championship because they were each in first in their divisions at the end of the season, but they never met in a playoff series, due to demise of the league.
The 1951 Sheboygan Red Skins, coached by Ken Suesens, were NPBL Champions after finishing the regular season in 1st place in the Eastern Division with a 29-16 record.