Diego Maradona is the man of the hour, even more than Gabriel Heinz who scored the winning goal for the team in the game against Nigeria; he has shown extreme characteristics through out his sport career, as a player for Argentina's national team, to its captain leading the team to winning the FIFA World Cup 1986, and to its coach today.
Watching him exhibit great emotion from the coach seat, Diego is holding a bracelet/rosary in his hand, which I think demonstrates some sort of superstitious belief. He is waving his hand in the air, and screaming something to his team, as if they can or should hear him.
As for the team itself, after watching 60 minutes of the game against Nigeria, I would be very surprised, if they make it beyond round 2. They are not that good.