Claim: 2010 Walt Disney World Pro Soccer Classic was played by four teams in United States from February 25-27.
Evidence: The tournament, the inaugural edition of the Pro Soccer Classic, was held from February 25 to 27 and featured four Major League Soccer clubs. 
February 25–27 The following four clubs competed in the tournament: United_States New York Red Bulls from Major League Soccer (1st appearance) Canada Toronto FC from Major League Soccer (1st appearance) United_States FC Dallas from Major League Soccer (1st appearance) United_States Houston Dynamo from Major League Soccer (1st appearance)