Brazil team doctor Jose Luiz Runco admitted on Sunday that star midfielder Kaka, who failed to shine at the World Cup, was not properly fit and wouldn't have played at a lesser event.

"Maybe in other situations Kaka would not have played even the World Cup but he really wanted to be there," said Runco as the squad touched down in Rio following its flight back from South Africa.

Kaka came into the tournament on the back of a disappointing season with Real Madrid which was marred by thigh problems which forced him to miss more than six weeks of the season.