Brazil coach Dunga believes his team are on the right track heading into the World Cup after convincing friendly victories over Zimbabwe and Tanzania.
The Canarinha arrived in Johannesburg on Tuesday on the back of a 5-1 win over Tanzania in Dar-es-Salaam on Monday, which followed a 3-0 triumph over Zimbabwe in Harare last Wednesday.
"We played two good games against two teams that play at a fast pace," said Dunga. "We are on the right track. Now we must polish the work we have done in recent weeks to be ready for our World Cup opener."