Fiorentina has been performing exceptionally well in recent years, securing top positions in the Serie A and Serie B leagues. However, their opponents are always looking to take advantage of any weakness in their defense. In order to maintain their position at the top of the league, Fiorentina will need to continue to strengthen their defensive setup.

One of the key areas that they need to improve is their backline. The team currently relies heavily on a combination of players who can move the ball forward, but it appears that this system is not working as expected. It would be wise for Fiorentina to look into improving their midfield players' ability to create space for their attackers by focusing more on passing responsibilities.

Another area that needs improvement is their defensive structure. While Fiorentina has some solid defenders, there is still room for improvement. The team could benefit from adding some experienced players to their squad who can help them defend deeper down the field.

The team also faces a significant challenge with their front line, as they must be able to control the pace of play without giving up too many shots. This requires a high level of physicality and discipline from the team.

Overall, Fiorentina's round 4 campaign will be crucial for their survival in Serie A. By strengthening their defense, improving their midfield players, and enhancing their front line, the team will have a better chance of staying competitive and advancing to the next round of the competition.