Brazil's coach Dunga is set to take on his former boss and now Ivory Coast coach Sven-Goran Eriksson in Group G at Soccer City in Johannesburg.
Under Dunga, Brazil have swapped their famous "samba football" for a more disciplined approach and lost a few friends along the way. But Eriksson has nothing but praise for the man he managed as a 25-year-old at Fiorentina in 1988-89.
"He's one of the best footballers I ever had," the Swede said. "I'm not surprised they are extremely well-organised."
Adding spice to the game, Ivory Coast striker Didier Drogba renews rivalries with Brazilian defender Lucio after tense exchanges when Chelsea twice faced Inter Milan in last season's Champions League.
Ivory Coast are one of Africa's most highly-rated teams but have history against them. Brazil have not conceded a goal in their five past World Cup matches against African opposition.
Added to this African teams have only won one game so far this tournament.