ABC7News Chicago has an article about CFD firefighters injured at two fire scenes:

Firefighters were injured in two separate fires in Chicago.

Two firefighters, including a battalion chief, suffered minor injuries during a fire overnight Saturday in the Bucktown neighborhood.  It started on the second floor of a three-story home in the 2300 block of West Lyndale.

A fire on the Southwest Side also injured two firefighters. Once again, the injuries are not life threatening. This fire started in the basement of a home in the 6200 block of South Keeler. It spread through the roof of the home. The residents were not hurt.

thanks Dan