Mexico was rewarded for its attacking intent when Oribe Peralta's 61st minute strike gave them a 1-0 win over Cameroon in its World Cup opener at a rain-soaked Dunas arena on Saturday .
The Mexicans had two Giovani Dos Santos efforts controversially disallowed in the first half, but Peralta's goal means they will now feel they have a good chance of progressing from Group A, which also includes hosts Brazil and Croatia.
Cameroon, who only arrived in Brazil after a player strike was averted by last-minute negotiations, had packed its midfield in an attempt to stifle the Mexicans and lone striker Samuel Eto'o failed to find the goal with his few opportunities.
Mexico came out to attack, as coach Miguel Herrera had promised, and "El Tri" dominated the opening exchanges with wing-backs Miguel Layun and Paul Aguilar getting plenty of space out wide.
Dos Santos first found the net after 11 minutes but was called back despite appearing to be in line with the defenders.
Cameroon could have taken the lead after 21 minutes when full-back Benoit Assou-Ekotto beat two defenders and found Eto'o in the box but the striker was able only hit the outside of the post.
If the decision to deny Dos Santos a first goal could be called a marginal call, the second was a clear error.
A corner swung in from the left was flicked on by one Cameroon defender and, as another raced off the line, Dos Santos managed to turn back and angle the ball into the net with his head. The linesman, however, flagged for offside.
Peralta almost broke the deadlock three minutes after the break after Dos Santos played him through on goal but Cameroon goalkeeper Charles Itandje blocked his shot with his legs.
Cameroon's Assou-Ekotto had a free kick deflected off the Mexico wall and just wide after 58 minutes, but the game did not have to wait much longer for its first goal.
Dos Santos was released through the middle of the Cameroon defence and when Itandje managed to stop his low drive, Peralta was on hand to steer the ball into the empty net and send Herrera and the thousands of Mexican fans into paroxysms of joy.
Cameroon continued to threaten from set pieces and Mexico goalkeeper Guillermo Ochoa was forced to make a fine save to deny Benjamin Moukandjo in stoppage time.