#2 Lionel Messi's influence
While Argentina's poor performances have encouraged many people to write them off in the World Cup this year, it should not be forgotten that the Albiceleste still have one of the greatest players in history representing the nation. With Lionel Messi on the team, everything is possible for the South Americans in Russia.
Despite his recent struggles, Messi is still one of the most talented players in the world. On his day, the playmaker could single-handedly destroy Nigeria's defense and earn a vital victory for his nation.
He did it in 2014, scoring a fantastic brace, including a brilliant free kick to inspire the Albiceleste to a 3-2 victory over the African giants.
If Messi finds his rhythm in the game today, he could end up repeating that feat and secure Argentina's passage into the knockout stage of the tournament.