Messi...He is the most important player in his team and, while he has been in the shadow of Diego Maradona, who won the World Cup single-handedly in 1986, Messi can go some way to emulating him if he can take this team to victory in the land of their fierce South American rivals.
His Argentinian attacking colleagues have been, in the main, disappointing. Aguero isn’t fully fit, Higuain has struggled, Lavezzi has shown flashes and, apart from the Messi-inspired winner against Switzerland, Di Maria has failed to show. So Messi has a heavy weight to carry.