In the latest round of Serie A, Fiorentina has made some key changes to their tactical approach. The team has been performing well so far this season and they have shown a willingness to adapt to different situations. One of the key changes that Fiorentina has made is the use of defensive midfielder Marco Fontana. This player brings a strong physical presence to the midfield and he has helped Fiorentina improve their defense.

Another important change that Fiorentina has made is the use of a more aggressive style of play. They have emphasized attacking football and have tried to break down defenses by playing with a high tempo. This has resulted in some impressive goals from the team.

However, there are also concerns about the team's defensive performance. Some players have not been able to perform at their best and it has affected the team's overall results. Additionally, the team's possession ratio has not been as high as they would like.

Overall, Fiorentina's tactical adaptation in round four was a positive step forward for the team. However, there is still room for improvement in terms of performance on the pitch.