Brazil head coach Carlos Alberto Parreira told Mexican television station Televisa on Sunday that his team had played a slow game against Australia and the team must be patient so it can score more goals.
"We are in the second phase, which was our aim. There was a vitally important thing we had to do to achieve this: improve our tactics and physical fitness. Our group is very difficult, because the other teams play a different style," the coach said.
Brazil is in Group F with Australia, Croatia and Japan.
"I can't tell you who will play in the next match. Tomorrow we will have training and the medical team will tell me who is best for the team," he said.
He emphasized that he did not want to choose his opponents, because the team that wants to be world champion must be ready for whatever rival.
"And the World Cup is not won by 11 players alone. I trust all of the 23 men enough to put them on the field," he said.