 Its success led to the formation of the sports new governing body, the Uruguayan Rugby Union, in January 1951, with Carlos Cat as its first president.The first Club Championship was contested by Old Boys, Colonia Rugby, and multisport clubs such as Montevideo Cricket Club (MVCC) and Carrasco Polo (which supplied two XVs).A second international followed in '51, against a vastly more experienced Argentina team, in the South American Championship.