Roberto Carlos began his professional career playing for União São João, a football club based in Araras in the state of São Paulo. In 1992, despite playing at what was seen as a lesser club and only being 19 years old, he was called up for the Brazil national team. In August 1992, aged 19, he joined Atlético Mineiro on loan and went on the club's tour of Europe. The tour consisted of the B team, as the club was prioritising the first Copa CONMEBOL in South America at the same time. The tour served as a test for many players, and those who stood out could be integrated definitively to the main group. Roberto Carlos did not participate in the first two games in Italy but played the full match against Lleida in Spain on 27 August in a match for the Ciutat de Lleida Trophy. He remained in the team for the next two games, held in Logroño, against Logroñés and Athletic Bilbao. Before retiring from football in 2014, Roberto Carlos thanked Atlético Mineiro for the opportunity.