If European teams don't win the World Cup in South America, then Argentina are the biggest obstacle to Brazil right now. With their devastating forward line, they could have an air of Brazil 2002 about them and be the ones to go on and win it.
Of course, that would be a truly earth-shattering moment if they did - Brazil's greatest rivals, taking the tournament on Brazilian soil that was supposed to be the home side's sixth. They're the team everybody's waiting to see, and they'll kick things off against Bosnia and Herzegovina.
That may be a trickier test than it sounds. Bosnia have a fairly shoddy defence, but plenty of attacking talent, and in the country's first ever World Cup, they may well go for it. Argentina's defence isn't the best either, so this game could well be high-scoring.
Match date/time: 6 p.m. ET
Venue: Estadio Maracana, Rio de Janeiro
TV: ESPN (U.S. English), ESPN Deportes, Univision (U.S. Spanish), BBC One (U.K.), CBC (Canada), DirecTV (Argentina), BHT1 (Bosnia and Herzegovina.)
United States announcers: Derek Rae, Roberto Martinez
Online: ESPN3 (U.S.), BBC iPlayer (U.K.)