C.J. Sapong scored the go-ahead goal in the 53rd minute as the host Chicago Fire tallied three times in the second half to post a 4-1 victory over the Colorado Rapids on Saturday afternoon in Bridgeview, Ill.
Colorado defender Tommy Smith was unsuccessful in his gamble for the ball, allowing Katai to race in from the right wing before approaching the goal. Katai then sent a centering feed to a sliding Sapong, who redirected the ball into the net to give the Fire a 2-1 lead in the 53rd minute.
Mihailovic doubled the advantage eight minutes later after cleaning up Gaitan's off-balance bid for his first goal of the season. The touch was the last of the day for Mihailovic, who exited in the 62nd minute in favor of Mohammed Adams.
Katai capped the scoring in the 80th minute with a blast from well outside the box for his first goal of the season.
After converting a penalty kick to help Chicago record a 1-1 draw versus Vancouver last Saturday, Nikolic opened the scoring in the 34th minute by heading home a brilliant bending cross from Gaitan.
Kamara answered six minutes later, heading home a corner kick to forge a 1-1 tie with his team-leading fifth goal of the season.
Katai had a pair of chances in a short sequence to open the scoring, but his initial left-footed shot from in close was blocked in the 26th minute before his follow-up bid caromed off the crossbar.