The NNL split the season into two halves. St. Louis won the first half, Chicago won the second half. The teams met at the end of the season in a best-of-9 playoff series to determine the Champion.
The 1928 Kansas City Monarchs, managed by Bullet Rogan, missed the postseason after finishing the NNL1 regular season in 2nd place with a 50-29-1 record.