Started independently in 2006, Ultimate Chicago has joined with the founders to help offer two divisions of the league. Beginning in early May and lasting until mid-June, Men's league serves as a tune-up for many serious club players.   Games are on weeknights on the lit fields at UIC. 

The league aims to be small with approximately 160 players that are divided into "A" and "B" divisions.  After one night of pickup the "A" division captains draft their teams, and any undrafted players are folded into the second draft, along with those only registered for the "B" division.