Portugal bowed out early in the last two World Cups, but there is a sense that the Selecao will be able to contend this time around, namely due to their captain, who was in outstanding form this season, scoring 44 goals for Real Madrid in all competitions.
The family has also made elaborate plans for Messi's birthday which will fall during the World Cup on June 24.
Ronaldo may be 33-years-old, but he is still one of the greatest players in the world and the crown jewel of Real Madrid.
Lionel Messi, and it isn't even close.
Cristiano Ronaldo's fan following seems all-encompassing. He's a guy who surprises me every day. Ronaldo's supporters will question whether the Argentine could ever deliver at the same level away from the bosom of Barcelona-the club that has nurtured him since he was 13. The player I love the most is Argentina's Lionel Messi.
I want Argentina to win the title because this his last chance for the little genius Messi to win a major trophy for his country.
Last year's Copa America final defeat to Chile, in which Messi missed a penalty, was the latest bitter disappointment in long list of anti-climaxes.
Thing to say to make yourself sound clever: Higuain never delivers on the global stage, and meanwhile they've left their best striker, Mauro Icardi, at home. CBS Sports will have you covered for each game, all the important news and more, as well as profiles of all of the teams.
Argentina supporters were still digesting his penalty miss in that second successive shoot-out defeat by Chile in June 2016 when he announced his worldwide retirement at pitch side. Such is the hysteria that Messi's biographer, Sebastian Fest, said it had got to the stage where "it nearly amuses him not to sing it".
Following Enzo Perez's late call-up to the Argentina World Cup squad, his side now boast the oldest team at a second World Cup in a row, with an average age of 29 years and six months.