The Carolina Challenge Cup is a four-team round robin pre-season competition hosted by the Charleston Battery. It was started in 2004 and features teams from Major League Soccer and the United Soccer Leagues. The Columbus Crew edged out D.C. United on goal differential to win the 2004 competition, while the San Jose Earthquakes won the 2005 competition. San Jose's second iteration (although a separate team), the Houston Dynamo, won the 2006 and 2007 versions. The San Jose Earthquakes again won the tournament on their return to the MLS in 2008 while Real Salt Lake claimed the title in their debut in 2009.