Mexico has always been a tough rival when it faces Brazil. El Tri proved against Cameroon that they have more coordination and fluidity than ever before, but coach Miguel Herrera can surely improve his side's functionality.
The substitutions are the obvious dilemma, as the players who came in during the opening game were not as connected as those who had been on the pitch from the start.
Mexico also lacked the surprise factor through long-distance shots, which always test the goalkeeper's reflexes and open a good window of opportunity to score when the defense is locked up.
El Tri have to fight hard and take advantage of their great momentum.