Ghana striker Dominic Oduro scored the solitary goal for Chicago Fire which piped Philadelphia Union 1-0 on Saturday in the Major League Soccer.
The 26-year-old scored for the second straight game as they condemned Philadelphia Union to their fifth straight defeat.
Oduro scored with a well-placed header in the 28th minute.
The win has helped Chicago Fire to third place.
Compatriot Patrick Nyarko was also in action for Chicago Fire.