Chicago Fire FC - Wikipedia
File:MLS crest logo RGB - Chicago Fire 2015.svg - Wikipedia
Houston Dynamo FC - Wikipedia
How New York City FC fans used Wikipedia to jinx their team - Once A Metro
Official Chicago Fire FC Website
New England Revolution - Wikipedia
2017 Chicago Fire season - Wikipedia
Columbus Crew - Wikipedia
File:Chicago Fire v. Vancouver Whitecaps FC March 2015 012.jpg - Wikimedia Commons
Chicago FC United - Wikipedia
Chivas USA - Wikipedia
Chicago Fire FC - Wikipedia
United States Soccer Federation - Wikipedia
FC Dallas - Wikipedia