Serie A, the top football league in Italy, has been one of the most exciting and competitive leagues in Europe for many years. However, with each new season comes the anticipation of potential upsets that could shake up the standings.

In round four of the current Serie A season, there is no shortage of teams that have the potential to cause upsets. One such team is AC Milan, who have been in fine form this season under new manager Stefano Pioli. Despite their impressive start to the campaign, they face tough competition from Inter Milan, who have been on a strong run of form recently.

Another team that could cause some upset is Roma, who have been performing well under new coach Paulo Fonseca. They have already beaten Juventus and Lazio this season, showing that they are not afraid to take on the big clubs.

However, it's not just the big teams that could cause upsets. There are also several smaller clubs that are capable of causing trouble. For example, Sassuolo have been performing well under new manager Roberto De Zerbi, and they have already defeated Napoli and Juventus this season.

Of course, predicting upsets can be difficult, as anything can happen in football. But with so many talented players and coaches, there are always opportunities for surprise results. It will be interesting to see how these matches play out and which teams manage to come through with the win.