Thiago Silva has admitted that the Brazilian Olympic team believed they had beaten Egypt by half-time on Thursday evening, and stated that they cannot afford to make the same mistakes again if they want to take the gold medals.
Rafael, Leandro Damiao and Neymar gave the Brazilians a seemingly unassailable 3-0 lead after 30 minutes of the Group C clash, but the Egyptians hit back through Mohamed Aboutrika and Mohamed Salah in the second half to almost snatch an unlikely point.
And the 27-year-old defender, who recently signed for Paris Saint-Germain in a £33 million deal, agreed with criticisms of the Selecao's performance, believing that his side were caught off guard by their resurgent opponents.
"They came back to the second half more determined, which is something that we didn't expect," he said after the match. "This sort of thing can't happen, because in football you have to be ready for everything.
"We arrived for the second half too relaxed, thinking the game was over already, which can't happen again. We came back to the pitch a bit sleepy."
Brazil play Belarus at Old Trafford on Sunday in their second group game of the 2012 Olympics.