Watching: In the first match day of the 2013 Disney Pro Soccer Classic, the Philadelphia Union take on USL Pro team Orlando City SC Subscribe to our channel for more soccer content: www.youtube.com - Follow us on Twitter: twitter.com - Like us on Facebook: www.facebook.com - Add us to your circle on Google Plus: plus.google.com About MLS: Headquartered in New York City, Major League Soccer is the top-flight professional soccer league in the United States and Canada. MLS features many stars from the US, Canada, and around the world. Major League Soccer's 17th season features 19 clubs each playing 34 regular-season matches. Those clubs are the Chicago Fire; Chivas USA; Colorado Rapids; Columbus Crew; DC United; FC Dallas; Houston Dynamo; 2011 MLS Cup champion LA Galaxy; New York Red Bulls; New England Revolution; Philadelphia Union; Portland Timbers; Real Salt Lake; San Jose Earthquakes; Seattle Sounders FC; Sporting Kansas City; Toronto FC; Vancouver Whitecaps FC; and, in their inaugural season, Montreal Impact. For more information about MLS, log on to the league's official website at www.MLSsoccer.com