"Secret Tournament" (also known as "Scorpion KO" or "The Cage") was a Nike global advertising campaign coinciding with the 2002 FIFA World Cup.
[2] The concept of the advertising campaign was a fictional tournament involving eight teams of three of football's top players in a first-goal-wins elimination.
The matches were staged in an enclosed pitch located on a ship with former footballer Eric Cantona acting in the role of referee.
[4] Besides the TV advertising campaign, the marketing strategy involved the execution of local tournaments in several major capital cities of the world, being held in schools, sport venues and stadiums.
[7] Following the airing of the commercials, in June 2002 an estimated 1–2 million children under the age of 16 competed in matches following the Scorpion KO rules in several major cities worldwide, including London (in the Millennium Dome), Beijing, Mexico City (in the then existent Toreo de Cuatro Caminos dome), Buenos Aires, Montevideo, Los Angeles, Madrid, Paris, Rotterdam, Santiago, São Paulo, Seoul, Tokyo, Berlin and Rome.