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 Maracana Stadium. It was Brazil's first-ever home loss in a World Cup qualifier, having entered the game 51-13-0 in 64 such matches. The world champions handed their fiercest rivals a third consecutive loss as Brazil came into the match having conceded back-to-back defeats in World Cup qualifiers for the first time in their history.