Sure, here's a potential article on predicting potential upsets in Serie A round 4:

Serie A Round 4 Preview: Key Players and Analysis

In the final rounds of the season, the Italian football league will see some exciting matches unfold. The Serie A table will be filled with key players who have the potential to cause disruption.

One player who stands out is Cristiano Ronaldo, the world's most famous soccer player. He has been at the top of the league for several years now and has consistently scored goals for Juventus FC. However, there is always a chance that he could struggle during this year's season.

Another player who stands out is Lionel Messi, the Argentine striker who has won numerous awards throughout his career. He is one of the best strikers in the world and can score easily from any position. However, injuries have been a concern for him in recent seasons.

There are also other key players who are expected to make their mark in Serie A. For example, Mario Balotelli, the French forward, has been struggling lately and may need time to recover from injuries. Marco Reus, the German midfielder, has struggled with injuries and may not play as much this season.

Overall, there are many talented players who could make a big impact in Serie A. It will be interesting to see how these players perform during the final rounds of the season.