In 1987, CBF announced it was not able to organize the Brazilian football championship, a mere few weeks before it was scheduled to begin. As a result, the thirteen most popular football clubs in Brazil created a league, The Clube dos 13, to organize a championship of their own. This tournament was called Copa União and was run by the 16 clubs that eventually took part in it (Santa Cruz, Coritiba and Goiás were invited to join). CBF initially stood by the Club of the 13 decision. However, weeks later, with the competition already underway, and under pressure from football clubs excluded from the Copa União, CBF adopted a new set of rules, which considered the Copa União part of a larger tournament, comprising another 16 teams. According to that new set of rules, the Copa União would be dubbed the Green Module of the CBF championship, whereas the other 16 teams would play the Yellow Module. In the end, the first two teams of each Module would play each other to define the national champions and the two teams that would represent Brazil in the Copa Libertadores in 1988. However, that new set of rules was never recognized by the Club of the 13 and largely ignored by most of the Brazilian media, who concentrated their attention in the independent league, eventually won by Clube de Regatas do Flamengo. The eventual final tourney was set to have Sport and Guarani, from the yellow module, and Flamengo and Internacional from the green one. It never materialized, however, as Flamengo and Internacional refused to partake in it. As a result, Sport and Guarani played each other, with the first one winning the Championship for 1987 and both going on to represent Brazil in the Copa Libertadores in 1988. Although Flamengo has attempted to gain ownership of the championship multiple times through the justice system, Sport remains recognized by both CBF and FIFA as 1987 Champions.