Chicago Fire assistant coach Clint Mathis talks the disappointing loss at Chivas USA, and looks ahead to Sunday's match vs. the Portland Timbers. Want to see more from the Chicago Fire? Subscribe to our channel at //www.youtube.com/officialfiresoccer. Facebook: http://www.facebook.com/chicagofire Twitter: http://www.twitter.com/chicagofire Want to get to a game? Visit //www.chicago-fire.com to view upcoming matches and purchase tickets!