In particular, our match against Fiorentina holds an incredible importance.
We have two more matches until the winter break and 4 matches until we complete the first half of the season. The last 3 matches will be against the three worst teams right now (Carpi, Verona and Sampdoria) and we have a very big chance of winning those. But Fiorentina comes before them.
Beating Fiorentina, and then getting the expected wins against the 3 minnows, will put us in a very nice position where we chase the leader by only 2,3 or 4 points (maximum 6, but only in case Inter wins all 4 matches), with an entire half season ahead of us. That will take lots of pressure off of our back. We'll take on our rivals (Roma, Napoli, Inter) on home ground. It will also be a psychological advantage for us. Inter, Napoli or Roma might handle the pressure of being chased by each other. But once they feel our breath on their back, they capitulate. Every single 50-50 decision going our way or against them will result with a media war, and these teams can't live with that. It destroys them psychologically. They will collapse.
But not beating the rats will have an opposite effect. We already pushed harder than normal in order to compensate for those opening 6 rounds. If after all this hard work we don't beat Fiorentina and find ourselves -8 or -9 pts behind the leaders during winter break, then all the work until now will go in vain, we will be the ones with a huge physical and psychological disadvantage, while it will be a huge boost for the teams in front of us.
In short, this game on Sunday and a win there is incredibly important on so many levels. I'd even treat it as a more important fixture than the match in Seville. The Viola match decides our serie A season.