Sassuolo coach Alessio Dionisi says victory over Inter Milan was their best performance since he took charge.
Domenico Berardi proved the matchwinner at San Siro stadium.
Dionisi later said: "As for today's performance, it doesn't make me think of the Frosinone match: it's too early to have regrets.
"Every performance gives confirmation and some players are growing in awareness. To date , I put this one in first place among all the matches played: Inter are really strong, we've only faced a few others but I don't see any stronger ones in Serie A.
"To date it's the most important performance we've had since I've been here."
He also said: "I say two words: humility and ambition. We have personalities, ambition leads you to never be satisfied. The risk is having a full belly, if we are more ambitious than what we have shown so far we will be able to have few regrets in the future.
Humility I see it in individuals and it's there, but then in some matches we put it aside and it's not good."