Dunga's first defeat as Brazil's manager was on 6 February 2007 in a friendly match against Portugal, which at that time was coached by former Brazil coach Luiz Felipe Scolari.
Humbja e parë e Dungës si trajneri i Brazilit erdhi më 6 shkurt 2007 në një ndeshje miqësore kundër Portugalisë, që në atë kohë drejtohej nga ish trajneri i Brazilit Luiz Felipe Scolari.