Messi: They were beating people - but this is one of our most important wins

Nicolas Otamendi scored with a towering header to give Argentina a 1-0 away win over Brazil in a bad-tempered World Cup qualifier that was delayed by half an hour on Tuesday after police clashed with fans at a sold-out Maracana Stadium.

The longstanding sporting rivalry between two of the most successful teams in world football hit fever pitch after the Brazilian police charged Argentinian fans in response to fighting in the stands during the national anthems.

The world champions, led by captain Lionel Messi, went over to the terraces to try and calm the situation before leaving the pitch and returning to the dressing room for more than 10 minutes.

The players eventually returned and the match started in a tumult of noise as local fans roared their support of the five-times world champions, who were looking to get their campaign back on track after losing successive qualifiers for the first time.

Instead, Brazil plunged to a third straight defeat and first ever at home loss in a World Cup qualifier to stand sixth in the standings, eight points behind leaders Argentina and in the last spot that guarantees a berth at the 2026 finals.

"The truth is that this group continues to achieve historic things, once again," Argentina captain Lionel Messi told reporters.

"Obviously, at the beginning it was bad because we saw how they were beating people.

"You think about the family, the people who are there, who don't know what's going on and we are more concerned about that than playing a match. At that point the match was secondary.

"After that, winning this game like this I think is one of the most important wins that this group has achieved. It is something very nice to be able to win here in Brazil, after how strong they have been at