The Brazilians remained at the same odds after Friday's draw as they held going into it.
Argentina was next at 9-2, barely up from 5-1 odds, according to the professional oddsmakers Keith Glantz and Russell Culver. Germany was 5-1, followed by defending champion Spain at 7-1.
The odds for the United States, placed in a difficult group with Germany, Portugal (30-1) and Ghana (175-1) for the first round, rose from 60-1 to 150-1.
"We're excited," U.S. goalkeeper Tim Howard said. "We're looking forward to the challenge and we think we're a good team. We think we're a good team that can get better in a lot of areas. That's going to be the challenge for us and the motivation for us in the next six months."
France, at 20-1, sneaked ahead of top seeds Uruguay (25-1) and Switzerland (100-1) in the odds.
Other highly touted teams were Belgium (14-1) and Colombia (20-1).
The longest odds are 1,500-1 for Costa Rica, Honduras and Iran.
The Americans don't see themselves as long shots.
"We want to put ourselves in a position to get out of the group and that means getting points," Clint Dempsey said. " I don't look at it like we're the underdog, I just look at it like we want to get points in every game. I still think that our team has the quality that if we play our best ball, we can get out of the group."