Brazil midfielder Gilberto Silva is confident Kaka can return to the peak of his powers at the World Cup after a debut season at Real Madrid which has been dogged by injury.
After an injury-hit campaign, Brazil coach Dunga has nursed him back to fitness and although he came off with 12 minutes to go in the 2-1 win over North Korea, Gilberto is confident Kaka will be a force to be reckoned with as the World Cup progresses.
He said: "In every game he will improve. It is very good to see him because he is really hungry to do well for Brazil and for himself."
The former Arsenal midfielder added: "All the team are behind him and he has got the confidence of everyone. I am sure for the next games he will be much, much better."
Kaka, who was only a bit-part player in the 2002 World Cup success, will see this tournament as his big chance to play a starring role in a Brazil side at the World Cup and was cautiously pleased with his own performance.
"As a debut, I believe it was good. I didn't know what condition I would be in for the World Cup because of injury, so I am happy. I hope to constantly improve, but the debut has been a positive one," he told globoesporte.com.