Taylorville folded. A new team in Streator, Illinois formed and joined the league. The Champaign-Urbana Velvets changed their name to the Champaign Velvets. The team from Clinton moved to Kankakee, Illinois on May 16. Its record prior to the move was 2-5; thereafter, they went 54-51.
Canton and Pekin folded on July 10, before the end of the season. The league also instituted a playoff system in which the best record of the first half of the season would play the best record of the second half of the season.
57-26 (1st half winner) (tied for 2nd half winner)
53-32 (tied for 2nd half winner)
As Lincoln won the first half outright and tied for the second, it seems to have been judged to be the winner.