The Brazil playmaker Neymar scored one goal and set up two more to spark the five-time World Cup champions past the United States 4-1 in an international football friendly in Maryland.
The Brazilians used the match to study talent ahead of the London Olympics and played a young squad with 17 Olympic-eligible players.
A crowd of 67,619 watched the Brazilians end a five-match win streak for the Americans, who enjoyed a 1-0 victory over host Italy in February and a 5-1 rout of Scotland last Sunday.
The Brazilians improved to 16-1 all-time against the Americans, winning for the ninth time in a row since suffering their only defeat in 1998.
The US play their final tune-up match on Monday against Canada in Toronto before beginning their 18-month 2014 World Cup qualifying campaign on June the 8th against Antigua an Barbuda in Florida.