Shock results and disallowed goals: World Cup Day 2 in pictures

Cameroon captain Samuel Eto'o put the team's World Cup controversy behind him for the country's opening match against Mexico at a rainy Arena das Dunas in Natal. But the star striker had few chances, and was unable to find the back of the net.

Mexico brought more fans to the World Cup than any other country, and it was noticeable in Natal. The loud crowd made it feel like a home match for El Tri.

Giovani Dos Santos proved a menace for the Cameroon defense, paired with Oribe Peralta. The attacking midfielder was unlucky to have two goals disallowed by the ref - costly decisions had Mexico not gone on to win the match.

Mexico's deserved winning goal finally came in the 61st minute. Dos Santos' initial effort was saved wonderfully by Cameroon goalkeeper Charles Itandje, but his defense let him down on the rebound, and Peralta tapped in easily. The victory puts the Mexicans into second place in Group A, behind hosts Brazil.

The marquee game of the day pitted Spain against the Netherlands - a rematch of the 2010 World Cup final. With Brazil-born striker Diego Costa fit, there was no excuse for the Spanish not to repeat their victory from four years ago.

Some 25 minutes into the match, Costa went down after seeming to create contact with defender Stefan de Vrij. Xabi Alonso converted the penalty, and keeping in theme with the World Cup so far, another controversial call led to a goal.

Despite conceding the undeserved penalty, the Dutch continued to fight. Moments before the break, defender Daley Blind's beatiful long ball from the left flank found Roben van Persie in the box. The Dutch captain lobbed a diving header over goalkeeper Iker Casillas to level the score at 1-1. The effort is easily the goal of the tournament so far.

Van Persie's goal just before the break was a sign of things to come. Arjen Robben beautifully brought down a long ball into the box and beat Casillas to put the Netherlands ahead in the 53rd minute.

The Spanish captain's night only got worse. After fumbling a cross that de Vrij finished to make it 3-1, his poor touch on a back pass in the 72nd minute lead to a giveaway. Van Persie pounced and score his second of the match.

But the Dutch weren't finished. Robben cut into the box, beat Casillas not once but twice, and fired a powerful shot into the upper corner of the net. It finished 5-1 for the Netherlands over the reigning World Cup champions. The World Cup's first true shock.

Chile jumped out to a 2-0 lead not 15 minutes into their match against underdogs Australia. Alexis Sanchez got first blood with an effort from close range.

Who else but talismanic forward Tim Cahill, with one of his trademark headers, to nab an unlikely equalizer for the Socceroos. It was a vailiant performance from a young Australian side, which managed to create their fair share of dangerous opportunities.

There was a sliver of hope for Australian fans when the fourth official signalled four minutes of stoppage time with which to find an equalizer. But substitute Jean Beausejour found space at the top of the box to fire a low, driven shot into the back of the net. It finished 3-1 to Chile.