Roma's central midfield is the key to their success in the upcoming round 4 of the Serie A season. The core of this midfield is composed of two players, Marco Verratti and Ciro Immobile.

Verratti has been one of the most consistent performers for Roma this season, with his passing ability and vision making him a key player in the team's attack. He has scored three goals and provided eight assists so far, showing that he is not just a pass-first player but also capable of scoring when called upon.

Immobile, on the other hand, is known for his goal-scoring prowess and his ability to create chances for himself and others. In his first season at Roma, he has already scored seven goals and provided four assists, proving that he is a threat both from set-pieces and through his dribbling skills.

Together, Verratti and Immobile form a formidable duo, capable of creating space and opportunities for their teammates. Their combination of technical skill and physicality makes them difficult to defend against, and they have already shown that they can be a force to be reckoned with in the Serie A league.

In addition to their individual performances, Verratti and Immobile's partnership has also helped to strengthen Roma's defense. They work well together as a pair of defensive-minded midfielders, providing cover for each other and ensuring that the backline remains solid.

Overall, the central midfield of Roma is the key to their success in the upcoming round 4 of the Serie A season. With Verratti and Immobile leading the way, there is no doubt that they will continue to be a major factor in the team's success.