Nigeria

As mentioned before, Jose Mourinho's surprise pick to get out of the group along with Argentina. Honestly, when has he ever been wrong? This will be Nigeria's third straight appearance in the WC finals, and their third straight time being drawn together with Argentina.
Nigeria qualified as the winners of their third round qualification group from Africa, and have one of the best kits in the tournament. Seriously, look it up. It would be a pleasure simply watching them strut around the field.
Coach: Gernot Rohr
Rohr is a very experienced coach, having managed teams all across the globe before ending up at the Super Eagles. He has been Nigeria's national coach since August 2016, guiding them through their qualification process.
His style is based on his team's strengths, high pressing football and beating the defenders with pace. Because Nigeria is a very young team at the WC, they are severely underrated and come into the group as underdogs.

The goalkeeper's squad is what most fans consider to be Nigeria's biggest weakness, and the one thing standing between them and a premature exit. None of the called-up goalkeepers play at the elite levels or have the required experience in a high-level tournament.
The job will most likely go to Uzoho, who is very underwhelming and shaky most of the time for the club during his limited playing time. He even made a mistake during their last friendly with England, when he misjudged a shot from Harry Kane and the ball went between him and the ground.
Shehu, Ekong, Balogun, and Echieljile are most likely to start as the defensive line, but even that is not without troubles. Echieljile is 30 years old, and somehow gives off the air of someone much older. He will be the vulnerable point in the defense, as wingers can skip past him with considerable ease.
Nigeria switch between a 4-3-3 or a 4-2-3-1, both featuring John Obi Mikel and Onazi as the holding midfielders. If it is a three-man midfield, Leicester City's Ndidi comes into the midfield.
Mikel and Onazi are extremely solid and provide very good cover for their team for the entire 90 minutes. Ndidi adds a dimension to the attack when he is chosen, even if he comes in late as a substitute.
Unlike at Chelsea, Victor Moses plays a very forward role - as a winger or even behind the striker when necessary. Leicester's Iheanacho and China-settled Ighalo share their duties as striker depending upon the opponent.
Iheanacho is employed when Nigeria need to hold up the ball and beat teams with their pace. Against teams that they can beat from the air, Ighalo is preferred because of his strength on the ball.
Arsenal's Alex Iwobi is the other winger and is a much better player for the national team than he is at Arsenal. He combines brilliantly with the other forwards, and his late runs into the box are scary on their own. He can score a lot of goals off rebounds, using his pace to outrun the defenders - similar to the one he scored against England.

Player to watch out for: Alex Iwobi
Iwobi might look out of his depth most of the time he plays for Arsenal, but he is an entirely different player for the national team. He goes for the audacious at every possible turn, and more often than not, it works.
Some fans even complain that he might be doing more than necessary and in the process ruining their attacks, but Iwobi is the best player on the side. If it is stupid and it works, it is not stupid.