The surprising result of Inter's match against Sassuolo which ended in defeat for Inter was a sad result for Inter fans.
It's not a surprise to me, because this is not the first time Sassuolo get a winning results that were beyond predictions when meeting a top team. I personally think that Sassuolo is "the big four killer", and the club that often gets surprises is AC Milan, and its happens from few season back. However, this is an advantage for AC Milan, because currently Milan has the same points as Inter Milan. There is little hope for Milan to be able to provide pressure to Inter Milan.
Yes, it's not a surprising result either, but at least at this moment Inter look like the best team in Serie A, so naturally there are some of them who are surprised by results like this. Because yes, what is extraordinary for Sassuolo is that Sassuolo managed to beat two big teams in a row. Therefore, for me even though Sassuolo is a team that has a good ability to beat teams in the top four. But yes, if Sassuolo managed to beat Juventus and Inter in a row then obviously, at least the result also makes anyone can be surprised because Sassuolo managed to make Juventus and Inter suffer their first defeat this season.
Last season's Juventus team did not perform very well. I haven't followed much of the Juventus team this season so far. However, seeing the news in some places, I understand that the team is trying hard to return to their best performance.