Former Brazil coach Dunga's Internacional steam-rolled Sao Luiz 5-0 on Sunday to win the first stage of the Gaucho championship and qualify for the final of the competition.
Striker Leandro Damiao scored twice and Rafael Moura, Andres D'Alessandro and Gabriel shared the other goals as Inter overcame a difficult rain-sodden pitch.
They will meet the eventual winners of the second stage, still to be played, in the final.
Dunga, who captained Brazil's 1994 World Cup-winning side, was appointed in December for his first coaching job since he led Brazil to the quarter-finals of the 2010 World Cup.
The Gaucho championship, played in the southern state of Rio Grande do Sul, is one of a plethora of bafflingly complex regional tournaments which kick off the marathon Brazilian season.
Ten-man Sao Paulo overcame a red card for central defender Lucio to draw their derby 0-0 with Palmeiras and stay top of the Paulista championship's qualifying stage.
The former Brazil and Bayern Munich defender was dismissed for elbowing midfielder Jorge Valdivia early in the second half.
Dutchman Clarence Seedorf was involved in the only goal, scored by Lucas, as Botafogo beat Vasco da Gama 1-0 to win the first stage of Rio de Janeiro's Carioca championship.
Borussia Dortmund's Mario Gotze ruled out of Champions League final against Bayern Munich
Malaga coach Manuel Pellegrini will leave the La Liga club at the end of the current season
Stoke City and manager Tony Pulis part company by mutual agreement after seven years
Andy Carroll pulls out of England's friendly internationals against Ireland and Brazil
Ten years on, the legends speak to FFT
Your questions answered by an A to Z of legends
He's here, he's there, he's...
The cost of Premier League away travel
Nike CR7 IX for you
FourFourTwo is brought to you by Haymarket Consumer Media & FourFourTwo is part of Haymarket Sport
| International Licensing | © Haymarket Media Group 2010