In 2009, each team played the other three teams in the tournament once in a round-robin tournament format, with each game played at a neutral venue in the United States. Chelsea emerged as the World Football Challenge champion for 2009. The following four clubs participated in the 2009 tournament:[2][3][4]
Clubs received one point for each goal scored in regulation time (up to three goals per game). Clubs earned three points for a win that does not go into penalty kicks. After 90 minutes of play, if the match was tied, each team received one point and the winner of the penalty kicks received an additional point. The team with the highest overall number of points determined the World Football Challenge champion.[5]
^Cardillo, Michael (March 24, 2009). "World Football Challenge Coming to a City Near You". Fanhouse. Archived from the original on June 15, 2009. Retrieved July 21, 2009. ... which brings super clubs Chelsea, AC Milan, Inter Milan and Club America to a six-match 'series' this summer...