The document summarizes the results of the 3rd Campeonato Serrano Mirim youth soccer tournament held in Santa Maria de Jetibá, Brazil in 2012. It includes the group stage schedules and results for groups A and B, the semi-final matchups, and individual player stats tracking goals and cards for each team. The tournament featured teams from Baixo Guandu, Santa Maria de Jetibá, Laranja da Terra, Itarana, Itaguaçu, and ADGU.