Philippe Coutinho hit a hat trick as Brazil coasted to a 7-1 Copa America Group B victory over Haiti in Orlando.
Renato Augusto hit a brace for Dunga's side, while Gabriel Barbosa and Lucas Lima also netted for the rampant Brazilians with Haiti's solitary reply coming from James Marcelin.
The defeat means that Haiti are the first team to be eliminated from this year's tournament.
Peru and Ecuador fought to a 2-2 draw in the later game.
Peru put their fellow South Americans on the ropes early with sensational goals from Christian Cueva and Edison Flores within the first 14 minutes.
But Ecuador fought back into the game and pulled a goal back through Enner Valencia six minutes before the break -- his trap and shot beating Pedro Gallese from close range.
They secured their equaliser 14 minutes into the second half -- Jefferson Montero found a wide open Miller Bolanos, who tapped into an empty net.